SU1710568A1 - Reagent for drilling mud - Google Patents

Abstract

The invention relates to the drilling of oil and gas wells, namely, the drilling of a well bore. The purpose of the invention is to increase the stabilizing ability of the reagent under the conditions of lamination while increasing the effectiveness of reducing the structural and mechanical properties of the drilling fluid. The agent consists of the following components with their ratio of мас wt%: spar 5-10, alkaline waste, obtained by refining light distillates of direct oil refining at the leaching stage, and the rest. The reagent provides lower water loss and static shear stresses than known reagents. 1 hp f-ly, 2 tabl. ^ (L

Description

The invention relates to the drilling of oil and gas wells, in particular to the washing of the wellbore.

The circuit of the invention increases the stabilizing ability of the reagent under the conditions of sludge while at the same time increasing the effectiveness of reducing the V structural and mechanical properties of the drilling fluid.

The reagent includes the ingredients in the following ratio, wt.%:;

Gipan5,0-10,0

Alkaline waste, semi-:

cleaning

light distillates

pr my processing

oil at the stage of leaching (SCHO) Else

The alkaline alkaline material used is a non-toxic light brown liquid with a density of about 1000 kg / m, pH-8-9. The main components of alkali are, in wt.%: Unidentified organic substances.

00 11-16; naphthenic acids of at least 8; free alkali not more than 2; eoda rest. The reagent is prepared by blending the ingredients.

Pr im. 140 g of hypan with 70% moisture are added to 860 g of alkaline alkaline oxide and the solution is stirred until homogeneous.

Claims (2)

Various formulations of the reagent, when prepared in accordance with the specified example given in table. 1, Reagent treatment results are different. types of boron () solutions are given; ii r in table. 2. For treatment of solutions (Table 2), reagents diluted to 10% concentration are used. The composition of drilling fluids. Fresh, 6% bentonite, the rest is water. At the same time, 15 cmSNS, / 4th 171 / / 180 dPa; 2p / (25 mPa, s; 5 "-PH 9.2. Mineralized, 10% Kaolin, 2% bentone, 2% NaCl, The rest is water. At the same time B (35 CHC, / ;, about 150/160 dPa; pl 21 mPa. S; 111 dPa; pH 8.9. The stability of the stabilizing ability of the reagent under zapshamleni is determined by measuring the water loss before introducing the sludge (B) and after removing it from the solution (BgJ. In addition, sdhvig (), plastic viscosity (2p (|) and static shear stress (SNA, o)); From table 2 it follows that dang; reagent with the ratio of ingredients specified in the formulas e of the invention provides less water loss (B / j) and static shear stress than the known reagent. These advantages of the proposed reagent 1define the effectiveness of its use in field practice. Claim 1, Reagent for a drilling solution, including hypan and additive This is due to the fact that, in order to increase the stabilizing ability of the reagent under the conditions of slimeing, at the same time increasing the effectiveness of reducing the structural and mechanical properties of the drilling fluid, it contains As an additive, alkaline waste, obtained during the purification of light distillates of direct oil refining at the leaching stage, with the following ratio of ingredients, wt,%: Gipan5-10 Alkaline waste obtained during purification of light distillates of direct oil refining at the final stage : alkalization 2. The reagent according to claim 1, about tl and h ayush and s., That use t share 60-90% humidity. table1 Table 2 Shnerali2, 5 called 62/73