SU1609945A1 - Device for setting equipment in well - Google Patents

Abstract

The invention relates to the drilling of oil and gas wells. The goal is to increase the reliability of the device by increasing the resistance to the bending moment on the locking elements and increasing the load capacity of the device. The device includes a housing (K) 1 with radial holes, in which the fixing elements (FE) 2 are arranged with the possibility of radial movement. In K 1 there is a pusher (T) 6 with an axial hole and a conical side surface. The inner surface K 1 is made conical with an apex angle of not more than 20 °, and the conical surface T 6 is made with a mating conical surface K 1 to interact with the latter in the working position. In the upper part of the axial bore T 6, the saddle for the waste shut-off member 9 is made. cross section pointed in a parabola. The drill pipe device is lowered into the well. Through the drill pipes, the locking member 9 is dropped, which locks the axial hole T 6. Then fluid is pumped into the pipes. The studs 8 are cut off and the T 6 moves down and exposes the PV 2. The device is thus securely fixed in the well. After lifting the drill pipe downhole equipment is lowered onto the device. 3 il.

Description

nn locking elements (FE) 2. In K 1 is placed a pusher (T) 6 with an axial bore and a conical side surface. The inner surface K 1 is made conical with an apex angle of not more than 20, and the conical surface T 6 is made with a counter conical surface K I to interact with the latter in the working position. In the upper part of the axial bore T 6, there is made of a cedon, under the discharge valve 9. The supporting ends of the PE 2 are cut at an angle corresponding to the angle of inclination to the device axis of the conical surface T

In cross section, the PEs 2 have a round shape, and their working ends are made in a longitudinal section, pointed along a parabola. Device on

drill pipe goes down the well. Through the drill pipes, a stop valve 9 is discharged, which locks the axial hole T 6. Then fluid is pumped into the pipes. Pin 8 is cut off and T 6 moves down and exposes the PV 2. Due to this, the device is securely fixed in

well. After lifting the drill 15 pipes down the device inside

)., downhole equipment. 3 il.

The invention relates to the technique of drilling oil and gas wells, intended to create an artificial slaughter at any depth in a cased and uncased borehole, which is necessary when carrying out emergency work, from creating a well in the well, or installing equipment in a well.

The purpose of the invention is to increase the reliability of the device by increasing the resistance to bending moment on the locking elements and increasing the load capacity of the device.

FIG. shows the device assembly before descending into the well; in Fig. 2. - the same, with the fixed fixed elements | on fig.Z - fixing element.

The device consists of a housing 1 with radial openings of locking elements located therein. 2. The body has a thread 3 to attach a disconnector or downhole equipment, a thread 4 for connecting an additional section of the device (if necessary, a screwdriver 5, a pusher 6 with an axial bore and a conical side surface is placed in the body. A saddle is made in the upper part of the axial bore. also includes sealing rings 7 and two shear studs 8 and is equipped with a waste shut-off body 9. In order to avoid spontaneous loss of the locking elements 2

five

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from case 1 they are slightly sealed in it or poured with BF-4 glue. The inner surface of the body is made conical with an angle at the apex of not more than 20, and the conical surface of the pusher is made opposite the conical surface of the body. The supporting ends of the fixing elements are cut at an angle corresponding to the angle of inclination to the axis of the device of the conical surface of the pusher, the cross-section fixing elements have a round shape, and their working ends are made in longitudinal section pointed along a parabola.

A device with a disconnector screwed onto it on the drill pipe is lowered into the well to the intended depth. Through the drill pipes, the locking member 9 is dropped, which sits in the push seat, locks its axial bore. Then, fluid pumps are pumped into the pipes by the drilling pumps. The studs 8 are cut, the plunger 6 moving downward extends the locking elements which, wound into the wall of the casing or into the wall of the open hole, firmly fix the device. Then, after lifting the drill pipes downhole equipment is lowered onto the device.

When installing the downhole equipment in the casing string, one section is sufficient. The same when installed in an open (open) trunk, the walls of which are composed of solid rock. When installed in an open hole, the walls of which are composed of soft clays, the possible number of sections should be increased. The required number of fixing elements can be easily calculated by knowing the load on the device and the strength of the borehole wall. The end of the movement of the pusher is determined by the pressure drop and the start of circulation of fluid through the opening 5.

To obtain more force on the locking elements 2, the angle between the generatrix of the cone and the axis should be chosen as small as possible (no more than 10).

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Claims (1)

Formula from. about Rete n i A device for installation of equipment in the well, including a housing with radial holes arranged in them with the possibility of radial movement, locking elements and f - ln p PP The outer surface placed in the housing with the possibility of axial movement and engagement of the working position with the supporting ends of the fixing elements, characterized in that, in order to increase the reliability of the device by increasing the resistance to the bending moment on the fixing elements and increasing the load capacity of the device, the body is conical in shape with an angle at the apex of not more than 20, the conical surface of the pusher l is made conical in response to the surface of the body for interaction with the latter in the working position, in the upper part of the axial orifice of the pusher, is made the saddle for the faulty shut-off member, the supporting ends of the fixing elements are cut at an angle corresponding to the angle of the device of the conical surface of the pusher, and the locking elements in cross section with the axle. " The hole and bore 25 HP of the elements have a circular outer surface. Z - ° nts: i4i out. DDUmji Yen in longitudinal section pointed in a parabola. 1609945 ten moving and interacting in working position with the supporting ends of the fixing elements, characterized in that, in order to increase the reliability of the device by increasing the resistance to bending moment on the fixing elements and increasing the load capacity of the device, the inner surface of the body is made conical with an apex angle not more than 20, the conical surface of the pusher is made in response to the conical surface of the housing 5 to interact with the latter in the working position, in the upper part of the axis The pusher hole in the pusher has a saddle for the waste shut-off element, the supporting ends of the fixing elements are cut at an angle corresponding to the angle of inclination to the axis of the device of the conical pusher surface, and in cross section the fixing elements have a circle of 25 lSu G elements have a circle - Z - ° nts: The elements of a circle have a circle - Z - ° nts: a point i4i. DDUmji Yen in longitudinal section pointed in a parabola. FIG. 2 Fig.Z