[go: up one dir, main page]

US3840460A - Lubricity additives for drilling fluids - Google Patents

Lubricity additives for drilling fluids Download PDF

Info

Publication number
US3840460A
US3840460A US00285330A US28533072A US3840460A US 3840460 A US3840460 A US 3840460A US 00285330 A US00285330 A US 00285330A US 28533072 A US28533072 A US 28533072A US 3840460 A US3840460 A US 3840460A
Authority
US
United States
Prior art keywords
weight percent
composition
drilling fluid
drilling
employed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00285330A
Inventor
D Sheldahl
J Striegler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Atlantic Richfield Co
Original Assignee
Atlantic Richfield Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Atlantic Richfield Co filed Critical Atlantic Richfield Co
Priority to US00285330A priority Critical patent/US3840460A/en
Application granted granted Critical
Publication of US3840460A publication Critical patent/US3840460A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/02—Well-drilling compositions
    • C09K8/03—Specific additives for general use in well-drilling compositions
    • C09K8/035—Organic additives

Definitions

  • drilling bit and the drill string which supports the bit in the wellbore are both conventionally rotated at rates of from about 100 to about 250 rpm.
  • drill pipe and drill collars Such drilling rigs, in the petroleum industry, generally drill boreholes having diameters of from about 8% to about 13% inches. Because of the drilling of deeper and deeper wellbores, etc. there is a need for drilling fluids of improved lubricity.
  • the rig used is lighter thereby allowing for more economical movement of the rig from one drilling location to another, particularly inaccessible locations.
  • This invention therefore relates to a composition useful in a well drilling fluid and a rotary drilling method, particularly a slim hole drilling method.
  • the lard oil used in the composition of this invention can be present in amounts of at least about 40, preferably from about 40 to about 80, weight percent, the mineral oil in amounts of at least about 10, preferably from about 10 to about 50, weight percent, and the halogenated paraflin in amounts of at least about 1, preferably from about 1 to about 20, weight percent.
  • Substantially any lard oil can be employed in any sulfurization process, a particularly desirable material being that which has a gravity (degrees API) of from about 9.5 to about 12, a viscosity (SUS at 210 F.) of from about 360 to about 600, and at least about 10.5 weight percent sulfur based on the weight of the lard oil.
  • Substantially any mineral oil can be employed, a particularly useful oil being that having a gravity (degrees API) of from about 22 to about 25, a Saybolt viscosity at F. of from about 55 to about 60, and a pour point, degrees F., maximum of about -50.
  • halogenated p-araflin the paraffin containing one or more of the halogens, i.e., chlorine, bromine, iodine, and fluorine, preferably chlo rine.
  • a particularly suitable material is chlorinated parafiin having a specific gravity (60/ 60 F.) of from about 1.16 to about 1.20, from about 40 to about 46 weight percent chlorine based on the weight of the chlorinated parafiin, a viscosity (SUS at 210 F.) of from about to about 280, and substantially no free chlorine.
  • the composition of this invention can be formed by blending the three components in any desired order with one another at sub-ambient, ambient, or super-ambient temperatures and pressures until a substantially homogeneous mixture is obtained.
  • Suitable properties for the final composition can be a gravity (degrees API) of from about 11.5 to about 12.5, a viscosity (SUS at 100 F.) of from about 1300 to about 1500, at least about 5 weight percent, preferably at least about 6 weight percent, total sulfur, and at least about 3 weight percent, preferably at least about 3.5 weight percent, total halogen.
  • the maximum amounts of sulfur and halogen are dictated only by practical considerations such as how much sulfur the particular lard oil used can be made to pick up in the particular sulfurization process used.
  • composition of this invention can be included in the composition of this invention, e.g. corrosion inhibitors, wear inhibitors, oxidation stabilizers, odor stabilizers, and the like. Two or more of these materials can be employed as desired.
  • Corrosion inhibitors can be used in amounts which vary widely but generally in an effective corrosion inhibiting amount. These materials include alkali metal sulfonates and alkaline earth metal sulfonates such as sodium sulfonate and calcium sulfonate, particularly overbased calcium sulfonate. Effective wear inhibiting amounts of at least one of monothiophosphates and polythiophosphates (2 to 10 sulfuratons) of zinc, cadmium, tin, iron, cobalt, nickel, vanadium, chromium, manganese, molybdenum,
  • tungsten, titanium, and zirconium can be employed, particularly zinc dithiophosphate.
  • These additives can each be employed in an amount of from about 1 to about weight percent and can be incorporated before, during, or after mixing of the other components.
  • the composition of this invention is normally employed in the drilling fluid utilized in the drilling operation. It has been found that whether a drilling fluid is susceptible to catastrophic vibration during high speed rotation is related to the scar width value obtained by subjecting the drilling fluid to a scar width test as hereinafter defined. The smaller the scar width, the greater the lubricity of the drilling fluid and, therefore, the less there is of a likelihood of catastrophic virbation while utilizing the drilling fluid in a high speed operation. Thus, the more the scar width value of a given drilling fluid can be decreased, the more likely it is that a drilling operation can be carried out with that drilling fluid without encountering catastrophic vibration.
  • composition of this invention when added to a drilling fluid, be it a water base (salt water or fresh water) or an oil base or invert drilling fluid, can substantially reduce the scar width value of the drilling fluid below the scar width value of that drilling fluid when it does not contain the composition of this invention.
  • the composition of this invention is employed in the drilling fluid in an amount effective to substantially reduce the scar width value of the drilling fluid and generally the scar Width value is reduced by at least about 0.01 of an inch. This is a substantial decrease in scar width and indicates a substantial increase in lubricity and in ability to prevent catastrophic vibration of drill pipe during high speed rotation, particularly in a small diameter wellbore.
  • the amount of composition of this invention which is employed will vary widely. Generally, at least about 0.1, preferably from about 0.2 to about 10, weight percent of the composition is employed in the drilling fluid and can be incorporated in the drilling fluid by mixing at sub-ambient, ambient, or superambient conditions of temperature and pressure until a substantially homogeneous mixture is obtained.
  • a scar width value for drilling fluid is obtained using an EP Mud Tester model 211 which is available commercially from the Baroid Division of the National Lead Company.
  • This tester is designed to measure the lubricating properties of drilling fluids by mounting a hardened steel test cup (Rockwell C scale hardness of 58-62) on a rotating shaft and forcing a steel wear block (Rockwell C scale hardness of 5862) against the test cup with a predetermined load while the test cup and wear block are immersed in the drilling fluid being tested.
  • the load is applied with a torque arm that is operatively connected to the wear block, the torque arm containing a torque gauge calibrated in inch pounds.
  • the friction load is read on an ammeter scale indicating the electrical current consumption of the driving motor.
  • the motor is run at 1400 rpm. which amounts to a surface velocity of the test cup of 507 feet per minute, the test cup diameter being 1.378 inches. Each test cup is used only once and a fresh spot is selected on the wear block for each run.
  • EXAMPLE A composition according to this invention was formed by blending 32 weight percent naphthenic mineral oil available commercially as Sintex Pale Oil and having the physical properties of API gravity of 22 to 25, and Saybolt viscosity at F. of 55 to 60; 60 weight percent sulfurized lard oil commercially available as Union Base and having the physical properties API gravity of 9.5 to 11.5, viscosity (SUS at 210 F.) of 360 to 450, no less than 10.5 weight percent total sulfur based on the lard oil; and 8 weight percent chlorinated paraflin commercially available as Paroil 142 having the properties of specific gravity (60/60 F.) of 1.16 to 1.20; 40 to 46 weight percent chlorine based on the chlorinated paraffin, viscosity (SUS at 210 F.) of to 280, and no free chlorine.
  • the composition was formed by adding the components in the above listed order to a blending kettle and mixing same for 1 hour at temperatures in the range of from to F.
  • a drilling fluid composition was made up by mixing 350 cubic centimeters (350 grams) of distilled water and 14 to 15 grams of bentonite at ambient conditions of temperature and pressure until a homogeneous mixture was obtained.
  • the combination of water and bentonite in the above amounts constituted the volume of drilling fluid employed in each scar width test for each composition discussed hereinbelow.
  • the mixture of drilling fluid and additive was then tested for its scar width in the manner disclosed hereinabove, keeping the friction load during each 20 second test at 3 amps.
  • composition of this invention decreased the scar width of the drilling fluid even below that obtained with commercially available additives and therefore increased the lubricity of the drilling fluid and also increased the ability of the drilling fluid to prevent catastrophic vibration during drilling over what can presently be achieved with commercially available additives.
  • a composition useful in a drilling fluid to increase the lubricity thereof consisting essentially of at least about 40 weight percent sulfurized lard oil, at least about 10 Weight percent mineral oil, and at least about 1 Weight percent halogenated paraffin, said composition containing greater than 2 weight percent total halogen and greater than 5 weight percent total sulfur.
  • composition according to claim 1 wherein said lard oil is present in an amount of from about 40 to about 80 weight percent, said mineral oil is present in an amount of from about 10 to about 50 weight percent, and said paraflin is chlorinated and is present in an amount of from about 1 to about weight percent.
  • a composition according to claim 1 wherein said composition has a gravity (degrees API) of from about 11.5 to about 12.5, a viscosity (SUS at 100 F.) of from about 1300 to about 1500, at least about 5 weight percent total sulfur, and at least about 3 weight percent total chlorine.
  • said mineral oil is a naphthentic oil which has a gravity (degrees API) of from about 22 to about 25, and a Saybolt viscosity (100 F.)
  • a composition according to claim 1 wherein there is additionally present at least one of (1) an effective rust inhibiting amount of at least one of alkali metal sulfonates and alkaline earth metal sulfonates, and (2) an eifective Wear inhibiting amount of at least one of monoand polythiophosphates of Zn, Cd, Sn, Fe, Co, Ni, V, Cr, Mn, Mo, W, Ti, and Zr.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

1. A COMPOSITION USEFUL IN A DRILLING FLUID TO INCREASE THE LUBRICITY THEREOF, SAID COMPOSITION CONSISTING ESSENTIALLY OF AT LEAST ABOUT 40 WEIGHT PERCENT SULFURIZED LARD OIL, AT LEAST ABOUT 10 WEIGHT PERCENT MINERAL OIL, AND AT LEAST ABOUT 1 WEIGHT PERCENT HALOGENATED PARAFFIN, SAID COMPOSITION CONTAINING GREATER THAN 2 WEIGHT PERCENT TOTAL HALOGEN AND GREATER THAN 5 WEIGHT PERCENT TOTAL SULFUR.

Description

United States Patent O LUBRICITY ADDITIVES FOR DRILLING FLIJIDS David B. Sheldahl, Griflith, Ind., and John H. Strregler, Richardson, Tex., assignors to Atlantic Richfield Co., New York, N.Y.
No Drawing. Original application Jan. 20, 1971, Ser. No. 108,170, now Patent No. 3,712,393. Divided and this application Aug. 31, 1972, Ser. No. 285,330
Int. Cl. Cm 3/32, 3/42 US. Cl. 252-85 C 6 Claims ABSTRACT OF THE DISCLOSURE A composition and method for preventing catastrophic vibration of a drill string during slim hole drilling wherein there is employed an additive composed of sulfurized lard oil, mineral oil, and halogenated paraffin.
CROSS REFERENCES TO RELATED APPLICATIONS This application is a division of application Ser. No. 108,170, filed Jan. 20, 1971, now Pat. No. 3,712,393.
BACKGROUND OF THE INVENTION Heretofore in rotary drilling a wellbore in the earth, the drilling bit and the drill string (drill pipe and drill collars) which supports the bit in the wellbore are both conventionally rotated at rates of from about 100 to about 250 rpm. Such drilling rigs, in the petroleum industry, generally drill boreholes having diameters of from about 8% to about 13% inches. Because of the drilling of deeper and deeper wellbores, etc. there is a need for drilling fluids of improved lubricity.
As an exploratory tool, it can be desirable to employ what is known as a slim hole drilling technique wherein the borehole has a diameter of up to about 6 inches, preferably from about 2 to about 5 inches. With slim hole drilling it is desirable to use higher than conventional rotation rates for the bit. For example, rotation rates of at least 400 r.p.m. and as high as 3000 rpm. are desirably employed to achieve shorter drilling time.
By drilling small diameter boreholes with high rotation speeds, larger numbers of exploratory wells can be drilled more economically. In addition, the rig used is lighter thereby allowing for more economical movement of the rig from one drilling location to another, particularly inaccessible locations.
However, an omnipresent problem with the high rotation rates in a small diameter borehole has been what is termed catastrophic vibration of the drill pipe. At rotation rates of greater than 400 rpm. the drill pipe tends to bounce from one side of the borehole to the other at a faster and faster rate until catastrophic transverse vibration sets in and results in failure of the drill pipe, usually by twisting 01f one section of drill pipe from an adjacent section of drill pipe at their coupling joint.
Thus, slim hole drilling using the most economical rotation rate for the drilling bit and pipe is not feasible unless catastrophic vibration during drilling is avoided.
SUMMARY THE INVENTION It has now been found that improved drilling fluid lubricity is obtained and that catastrophic vibration during high speed rotation can be prevented by the use of a composition consisting essentially of sulfurized lard oil, mineral oil, and halogenated paraflin, the composition containing greater than 2 weight percent total halogen and greater than 5 weight percent total sulfur. As used herein, weight percent recitations are based upon the total Weight of the composition unless otherwise specified.
This invention therefore relates to a composition useful in a well drilling fluid and a rotary drilling method, particularly a slim hole drilling method.
Accordingly, it is an object of this invention to provide a new and improved composition useful in a drilling fluid to increase the lubricity thereof. It is another object to provide a new and improved rotary drilling method. It is another object to provide a new and improved slim hole drilling method.
Other aspects, objects, and advantages of this invention will be apparent to those skilled in the art from this disclosure and the appended claims.
DETAILED DESCRIPTION OF THE INVENTION The lard oil used in the composition of this invention can be present in amounts of at least about 40, preferably from about 40 to about 80, weight percent, the mineral oil in amounts of at least about 10, preferably from about 10 to about 50, weight percent, and the halogenated paraflin in amounts of at least about 1, preferably from about 1 to about 20, weight percent.
Substantially any lard oil can be employed in any sulfurization process, a particularly desirable material being that which has a gravity (degrees API) of from about 9.5 to about 12, a viscosity (SUS at 210 F.) of from about 360 to about 600, and at least about 10.5 weight percent sulfur based on the weight of the lard oil.
Substantially any mineral oil can be employed, a particularly useful oil being that having a gravity (degrees API) of from about 22 to about 25, a Saybolt viscosity at F. of from about 55 to about 60, and a pour point, degrees F., maximum of about -50.
Substantially any halogenated p-araflin can be employed, the paraffin containing one or more of the halogens, i.e., chlorine, bromine, iodine, and fluorine, preferably chlo rine. A particularly suitable material is chlorinated parafiin having a specific gravity (60/ 60 F.) of from about 1.16 to about 1.20, from about 40 to about 46 weight percent chlorine based on the weight of the chlorinated parafiin, a viscosity (SUS at 210 F.) of from about to about 280, and substantially no free chlorine.
The composition of this invention can be formed by blending the three components in any desired order with one another at sub-ambient, ambient, or super-ambient temperatures and pressures until a substantially homogeneous mixture is obtained. Suitable properties for the final composition can be a gravity (degrees API) of from about 11.5 to about 12.5, a viscosity (SUS at 100 F.) of from about 1300 to about 1500, at least about 5 weight percent, preferably at least about 6 weight percent, total sulfur, and at least about 3 weight percent, preferably at least about 3.5 weight percent, total halogen. The maximum amounts of sulfur and halogen are dictated only by practical considerations such as how much sulfur the particular lard oil used can be made to pick up in the particular sulfurization process used.
Other conventional materials can be included in the composition of this invention, e.g. corrosion inhibitors, wear inhibitors, oxidation stabilizers, odor stabilizers, and the like. Two or more of these materials can be employed as desired.
Corrosion inhibitors can be used in amounts which vary widely but generally in an effective corrosion inhibiting amount. These materials include alkali metal sulfonates and alkaline earth metal sulfonates such as sodium sulfonate and calcium sulfonate, particularly overbased calcium sulfonate. Effective wear inhibiting amounts of at least one of monothiophosphates and polythiophosphates (2 to 10 sulfuratons) of zinc, cadmium, tin, iron, cobalt, nickel, vanadium, chromium, manganese, molybdenum,
tungsten, titanium, and zirconium, can be employed, particularly zinc dithiophosphate. These additives can each be employed in an amount of from about 1 to about weight percent and can be incorporated before, during, or after mixing of the other components.
The composition of this invention is normally employed in the drilling fluid utilized in the drilling operation. It has been found that whether a drilling fluid is susceptible to catastrophic vibration during high speed rotation is related to the scar width value obtained by subjecting the drilling fluid to a scar width test as hereinafter defined. The smaller the scar width, the greater the lubricity of the drilling fluid and, therefore, the less there is of a likelihood of catastrophic virbation while utilizing the drilling fluid in a high speed operation. Thus, the more the scar width value of a given drilling fluid can be decreased, the more likely it is that a drilling operation can be carried out with that drilling fluid without encountering catastrophic vibration.
The composition of this invention, when added to a drilling fluid, be it a water base (salt water or fresh water) or an oil base or invert drilling fluid, can substantially reduce the scar width value of the drilling fluid below the scar width value of that drilling fluid when it does not contain the composition of this invention. Generally, the composition of this invention is employed in the drilling fluid in an amount effective to substantially reduce the scar width value of the drilling fluid and generally the scar Width value is reduced by at least about 0.01 of an inch. This is a substantial decrease in scar width and indicates a substantial increase in lubricity and in ability to prevent catastrophic vibration of drill pipe during high speed rotation, particularly in a small diameter wellbore.
Depending upon the particular drilling apparatus employed, the method of operating that apparatus, the composition of the drilling fluid, the size and depth of the wellbore, and the like, the amount of composition of this invention which is employed will vary widely. Generally, at least about 0.1, preferably from about 0.2 to about 10, weight percent of the composition is employed in the drilling fluid and can be incorporated in the drilling fluid by mixing at sub-ambient, ambient, or superambient conditions of temperature and pressure until a substantially homogeneous mixture is obtained.
A scar width value for drilling fluid is obtained using an EP Mud Tester model 211 which is available commercially from the Baroid Division of the National Lead Company. This tester is designed to measure the lubricating properties of drilling fluids by mounting a hardened steel test cup (Rockwell C scale hardness of 58-62) on a rotating shaft and forcing a steel wear block (Rockwell C scale hardness of 5862) against the test cup with a predetermined load while the test cup and wear block are immersed in the drilling fluid being tested. The load is applied with a torque arm that is operatively connected to the wear block, the torque arm containing a torque gauge calibrated in inch pounds. The friction load is read on an ammeter scale indicating the electrical current consumption of the driving motor. The motor is run at 1400 rpm. which amounts to a surface velocity of the test cup of 507 feet per minute, the test cup diameter being 1.378 inches. Each test cup is used only once and a fresh spot is selected on the wear block for each run.
In the actual test itself, a friction load corresponding to three amps is applied with the torque arm and the run continued for 20 seconds holding the ammeter reading constant by increasing the load applied to the torque arm. The width of the scar formed on the wear block by the test cup is then measured and reported in inches. Each test is carried out under ambient conditions of temperature and pressure using sufiicient drilling fluid to completely immerse the test cup.
It has been found that by employing the composition of this invention in the manner described hereinabove, substantially smaller scar widths are obtained with a given drilling fluid as compared to scar widths obtained by the use of commercially available extreme pressure (EP) lubricant additives.
All of the materials useful in the composition of this invention are available commercially and are well-known in the art and therefore will not, for sake of brevity, be discussed in detail as to their source of availability or method of preparation.
EXAMPLE A composition according to this invention was formed by blending 32 weight percent naphthenic mineral oil available commercially as Sintex Pale Oil and having the physical properties of API gravity of 22 to 25, and Saybolt viscosity at F. of 55 to 60; 60 weight percent sulfurized lard oil commercially available as Union Base and having the physical properties API gravity of 9.5 to 11.5, viscosity (SUS at 210 F.) of 360 to 450, no less than 10.5 weight percent total sulfur based on the lard oil; and 8 weight percent chlorinated paraflin commercially available as Paroil 142 having the properties of specific gravity (60/60 F.) of 1.16 to 1.20; 40 to 46 weight percent chlorine based on the chlorinated paraffin, viscosity (SUS at 210 F.) of to 280, and no free chlorine. The composition was formed by adding the components in the above listed order to a blending kettle and mixing same for 1 hour at temperatures in the range of from to F.
A drilling fluid composition was made up by mixing 350 cubic centimeters (350 grams) of distilled water and 14 to 15 grams of bentonite at ambient conditions of temperature and pressure until a homogeneous mixture was obtained. The combination of water and bentonite in the above amounts constituted the volume of drilling fluid employed in each scar width test for each composition discussed hereinbelow.
Various additives were employed in a separate volume of the above drilling fluid by mixing the particular additive with the volume of drilling fluid at ambient conditions of temperature and pressure until a substantially homogeneous mixture was obtained.
The mixture of drilling fluid and additive was then tested for its scar width in the manner disclosed hereinabove, keeping the friction load during each 20 second test at 3 amps.
In all 10 runs were made, one run being the drilling fluid with no additive, 4 runs being the drilling fluid with commercially available EP additives, and 5 runs being the drilling fluid with additives according to this invention. In run 1 the drilling fluid with no additive was employed. In runs 2 and 3 different amounts of a commercially available additive identified as crude tall oil containing 0.2 weight percent chlorine and 4.4 weight percent sulfur was employed. In runs 3 and 4 different amounts of a commercially available additive identified as coal tar having 1.7 weight percent chlorine and 4.9 weight percent sulfur was employed. Runs 6 and 7 employed different amounts of the composition of this invention. Run 8 employed the composition of this invention with the addition of 1 weight percent zinc dithiophosphate. Run 9 employed the composition of this invention with the addition of 10 weight percent sodium sulfonate and 2 weight percent water. Run 10 employed the composition of this invention with the addition of 20 weight percent overbased calcium sulfonate. The results are as shown in the following table:
Run: Scar width, inches 1-Drilling fluid (DJFJ only 0.16 2D.F. plus 4 gm. commercial additive 0.04
3D.F. plus 8 gm. commercial additive 0.028
4'D.*F. plus 4 gm. commercial additive 0.04 5-D.F. plus 8 gm. commercial additive 0.03 6D.F. plus 6 gm. invention composition 0.02 7D.F. plus 3 gm. invention composition 0.025 8D.F. plus 6 gm. invention composition plus Zn dithiophosphate 0.03
TABLE-Continued Run: Scar width, inches 9D.F. plus 6 gm. invention composition plus weight percent Na sulfonate and 2 weight percent water 10D.F. plus 6 gm. invention composition plus overbased Ca sulfonate 0.025
It can be seen from the above data that the composition of this invention decreased the scar width of the drilling fluid even below that obtained with commercially available additives and therefore increased the lubricity of the drilling fluid and also increased the ability of the drilling fluid to prevent catastrophic vibration during drilling over what can presently be achieved with commercially available additives.
Reasonable variations and modifications are possible within the scope of this disclosure without departing from the spirit and scope of this invention.
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A composition useful in a drilling fluid to increase the lubricity thereof, said composition consisting essentially of at least about 40 weight percent sulfurized lard oil, at least about 10 Weight percent mineral oil, and at least about 1 Weight percent halogenated paraffin, said composition containing greater than 2 weight percent total halogen and greater than 5 weight percent total sulfur.
2. A composition according to claim 1 wherein said lard oil is present in an amount of from about 40 to about 80 weight percent, said mineral oil is present in an amount of from about 10 to about 50 weight percent, and said paraflin is chlorinated and is present in an amount of from about 1 to about weight percent.
3. A composition according to claim 1 wherein said composition has a gravity (degrees API) of from about 11.5 to about 12.5, a viscosity (SUS at 100 F.) of from about 1300 to about 1500, at least about 5 weight percent total sulfur, and at least about 3 weight percent total chlorine.
4. A composition according to claim 2 wherein said mineral oil is a naphthentic oil which has a gravity (degrees API) of from about 22 to about 25, and a Saybolt viscosity (100 F.) of from about to about 60, said lard oil has a gravity (degrees API) of from about 9.5 to about 11.5, a viscosity (SUS at 210 'F.) of from about 360 to about 450, and at least about 10.5 weight percent sulfur based on the weight of the lard oil, said paraffin is chlorinated and has a specific gravity 60 F.) of from about 1.16 to about 1.20, from about 40 to about 46 weight percent chlorine based on the weight of the chlorinated paraffin, a viscosity (SUS at 210 F.) of :from about to about 280, and substantially no free chlorine.
5. A composition according to claim 1 wherein there is additionally present at least one of (1) an effective rust inhibiting amount of at least one of alkali metal sulfonates and alkaline earth metal sulfonates, and (2) an eifective Wear inhibiting amount of at least one of monoand polythiophosphates of Zn, Cd, Sn, Fe, Co, Ni, V, Cr, Mn, Mo, W, Ti, and Zr.
6. A composition according to claim 1 wherein there is additionally present at least one of Na sulfonate, Ca sulfonate, and Zn dithiophosphate, each being present in an amount in the range of from about 1 to about 30 weight percent.
References Cited UNITED STATES PATENTS 3,214,374 10/1965 Sample 2528.5 3,635,294 1/1972 Faulk et al. 65 3,451,930 6/1969 Mead 252-32.7 3,361,667 1/1968 Wenborne et al. 25232.7 3,442,804 5/1969 Le Suer et al 25232.7 2,208,163 7/1940 :Prutton et al. 252 -48.4 2,156,265 5/1939 Miller et al. 252-48.4 2,921,903 1/1960 Beretvas 25248.4 X 3,216,936 11/1965 Le Suer 252 32.7 3,041,278 6/1962 Hobson 252-32.7
OTHER REFERENCES Rosenberg et al.: Article in Journal of Petroleum Technology, vol. 11, August 1969, pp. -202.
HERBERT B. GUYNN, Primary Examiner U.S. Cl. X.R.

Claims (1)

1. A COMPOSITION USEFUL IN A DRILLING FLUID TO INCREASE THE LUBRICITY THEREOF, SAID COMPOSITION CONSISTING ESSENTIALLY OF AT LEAST ABOUT 40 WEIGHT PERCENT SULFURIZED LARD OIL, AT LEAST ABOUT 10 WEIGHT PERCENT MINERAL OIL, AND AT LEAST ABOUT 1 WEIGHT PERCENT HALOGENATED PARAFFIN, SAID COMPOSITION CONTAINING GREATER THAN 2 WEIGHT PERCENT TOTAL HALOGEN AND GREATER THAN 5 WEIGHT PERCENT TOTAL SULFUR.
US00285330A 1971-01-20 1972-08-31 Lubricity additives for drilling fluids Expired - Lifetime US3840460A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US00285330A US3840460A (en) 1971-01-20 1972-08-31 Lubricity additives for drilling fluids

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10817071A 1971-01-20 1971-01-20
US00285330A US3840460A (en) 1971-01-20 1972-08-31 Lubricity additives for drilling fluids

Publications (1)

Publication Number Publication Date
US3840460A true US3840460A (en) 1974-10-08

Family

ID=26805597

Family Applications (1)

Application Number Title Priority Date Filing Date
US00285330A Expired - Lifetime US3840460A (en) 1971-01-20 1972-08-31 Lubricity additives for drilling fluids

Country Status (1)

Country Link
US (1) US3840460A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064056A (en) * 1976-06-28 1977-12-20 Texaco Inc. Drilling fluids containing an additive composition
US4200543A (en) * 1978-12-26 1980-04-29 Chevron Research Company Synergistic antioxidant lubricating oil additive composition
US4802998A (en) * 1986-07-08 1989-02-07 Henkel Kommanditgesellschaft Auf Aktien Powder-form lubricant additives for water-based drilling fluids
US5535834A (en) * 1994-09-02 1996-07-16 Champion Technologies, Inc. Method for reducing torque in downhole drilling
US5707940A (en) * 1995-06-07 1998-01-13 The Lubrizol Corporation Environmentally friendly water based drilling fluids
US5715896A (en) * 1994-09-02 1998-02-10 Champion Techologies, Inc. Method and composition for reducing torque in downhole drilling
US20050197255A1 (en) * 2004-03-03 2005-09-08 Baker Hughes Incorporated Lubricant composition
US8716197B2 (en) 2004-03-03 2014-05-06 Baker Hughes Incorporated Lubricating compositions for use with downhole fluids
WO2016168177A1 (en) * 2015-04-16 2016-10-20 The Lubrizol Corporation Additive compositions for drilling fluids and methods for their use
RU2730167C2 (en) * 2015-11-02 2020-08-19 Те Лубризол Корпорейшн Lubricant for water-based drilling fluid

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064056A (en) * 1976-06-28 1977-12-20 Texaco Inc. Drilling fluids containing an additive composition
US4200543A (en) * 1978-12-26 1980-04-29 Chevron Research Company Synergistic antioxidant lubricating oil additive composition
US4802998A (en) * 1986-07-08 1989-02-07 Henkel Kommanditgesellschaft Auf Aktien Powder-form lubricant additives for water-based drilling fluids
US5535834A (en) * 1994-09-02 1996-07-16 Champion Technologies, Inc. Method for reducing torque in downhole drilling
US5715896A (en) * 1994-09-02 1998-02-10 Champion Techologies, Inc. Method and composition for reducing torque in downhole drilling
US5707940A (en) * 1995-06-07 1998-01-13 The Lubrizol Corporation Environmentally friendly water based drilling fluids
US20050197255A1 (en) * 2004-03-03 2005-09-08 Baker Hughes Incorporated Lubricant composition
US8273689B2 (en) 2004-03-03 2012-09-25 Baker Hughes Incorporated Method for lubricating and/or reducing corrosion of drilling equipment
US8716197B2 (en) 2004-03-03 2014-05-06 Baker Hughes Incorporated Lubricating compositions for use with downhole fluids
WO2016168177A1 (en) * 2015-04-16 2016-10-20 The Lubrizol Corporation Additive compositions for drilling fluids and methods for their use
US20180072937A1 (en) * 2015-04-16 2018-03-15 The Lubrizol Corporation Additive compositions for drilling fluids and methods for their use
RU2730167C2 (en) * 2015-11-02 2020-08-19 Те Лубризол Корпорейшн Lubricant for water-based drilling fluid

Similar Documents

Publication Publication Date Title
US3712393A (en) Method of drilling
US3761410A (en) Composition and process for increasing the lubricity of water base drilling fluids
US4123367A (en) Method of reducing drag and rotating torque in the rotary drilling of oil and gas wells
US2589949A (en) Controlling drilling fluid viscosity
US3840460A (en) Lubricity additives for drilling fluids
US3027324A (en) Water base drilling fluid and method of drilling
US4172800A (en) Drilling fluids containing an admixture of polyethoxylated, sulfurized fatty acids and polyalkylene glycols
CA2115390C (en) Fluid composition comprising a metal aluminate or a viscosity promoter and a magnesium compound and process using the composition
US4181617A (en) Aqueous drilling fluid and lubricant composition
US4517100A (en) Lubricating wellbore fluid and method of drilling
US2568992A (en) Treatment for drilling fluids
WO2019175649A1 (en) Environment-friendly lubricant composition for water-based drilling fluids
US4064055A (en) Aqueous drilling fluids and additives therefor
US4053422A (en) Drilling fluids containing polyethoxylated tetraalkyl acetylenic diols
US2697071A (en) Oil base drilling fluid containing latex
US3332872A (en) Drilling fluid
EP0194254B1 (en) High-density brine fluid and use in servicing wellbores
US3716486A (en) Brine drilling fluid lubricant and process for drilling subterranean wells with same
US3111998A (en) Foam or mist drilling process
US3219580A (en) Drilling fluids having enhanced lubricating properties
CA1135039A (en) Drilling fluid made from abrasive weighting materials
US2331049A (en) Drilling mud
US20240384152A1 (en) Sodium decyl- and laurylglucosides hydroxypropyl phosphates as lubricating agents in aqueous based drilling fluids
US4064056A (en) Drilling fluids containing an additive composition
US2329878A (en) Drilling fluid and the method of drilling and lubricating wells