SU1252330A1 - Method of producing reagent for treating drilling muds - Google Patents

Description

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

The purpose of the invention is to reduce the duration of the process while reducing the consumption of reagents.

Example. Take 230 g (100 mash.) Sulphite-alcohol bards (PRS)

for 5 days, up to, with vigorous stirring, 2 g of NaOH and A5 g (in dry terms) of the agent obtained from formulation 8 are successively introduced. One hour after stirring, the solution is treated with 4 g of CaOH), after which the alternation is continued 1 more

37% concentration, 21 g (8.9 masses. H) 10 kovy solutions based on reagents

urotropin 35% concentration

and 3.0 g (1.3 wt.h.) phenol 92%

concentration.

20 ml (21 g) of a solution, 15 urotropin and 3 ml (3 g) of a solution of phenol are poured into a 20 ml of PRS (230 g) heated before. With vigorous stirring, the reaction mass is held for 1.5 h at this temperature and normal pressure, after which its 20 is cooled. Similarly, reagents are prepared, the compositions of which are presented in Table. one.

D tab. 2 presents the technological parameters of the condensation process - 25

compounds 7 and 9,

Prepare potassium chloride drilling mud composition, wt.%:

Bentoiite clay

The reagent composition 8

CMC

Ca (OH) j

CaCli

Water

In a clay suspension, linen perepeivaniem 150 tovay clay in 000 shchey keeping in

12.47 2.49 1.25 0.25 0.42 83.12 Preparation of beitoni g of water and then for 5 days

With a viscosity of HC of 20 s, with intense

perchemeshvana consistently enter 30 g (in terms of dry) reagent obtained from composition 8 and 15 g of CMC-600.

and the consumption of ingredients of the reaction mass in the preparation of reagents.

The effect of the reagent is evaluated on three types of drilling fluids.

In tab. 3 presents the properties of the mud, and in table. 4 - properties of drilling fluids treated with a reagent.

Prepared clay mud composition, wt.X:

Bentonite clay 13,04

Water86.96

150 g of bentonite clay are mixed with 1000 g of drinking water on a laboratory mixer of a vertical deist VIA with a rotational speed of 1000 rpm for 1 hour. The resulting drilling mud is kept for at least 5 days. If necessary, adjust the viscosity of the solution using a viscometer with water to 20 s.

Lime drilling mud composition is prepared, wt.%:

Bentonite clay 12.51 NaOH0.17

The reagent composition of 8 3.75 CA (Oh) ,, 0,33

Water83,24

Clay suspension prepared by mixing 150 g of bentonite clay in 1000 g of water and subsequent incubation for 5 days, up to c, with vigorous stirring, successively injected 2 g of NaOH and A5 g (calculated on dry basis) of the reagent obtained from composition 8. An hour after stirring, the solution is treated with 4 g of CaOH), after which the transformation is continued for another 1 hour. In the same way, lime compositions 7 and 9 are obtained,

Prepare calcium chloride solution composition, wt.%:

Bentoiite clay

The reagent composition 8

CMC

Ca (OH) j

CaCli

Water

In a clay suspension, linen perepeivaniem 150 tovay clay in 000 shchey keeping in

g water flow

with a viscosity of hydrocarbon 20 s, with intensive

30 g (in terms of dry) of the reagent obtained from the composition of 8 and 15 g of CMC-600 are sequentially added to the perchemesis.

The solution is stirred for 1.0 h, then treated with 3 g of Ca (OH) j and 5 g of CaCl. Stirring is continued for another 1 h.

In the same way, prepare calcium chloride solutions on the basis of the reagents compositions 7 and 9.

Chlorkalium drilling mud composition is prepared, wt./t:

Bentonite clay 12.04 KOH 0.24

The reagent composition 8 2,81 CMC-6000,64

KS4.03

Water80,24

In a clay suspension prepared by mixing 150 g of bentonite clay in 1000 g of water and then keeping for 5 days to a HC viscosity of 20 s, with vigorous stirring, 3.0 g of KOH, 35 g (on dry basis) of the reagent, are sequentially added, obtained from 8 and 8 g of CMC-600. One hour after stirring, the solution is treated with 50 g of KCl and stirring is continued for another 1 h.

Chlorkalium solutions based on reagents of compounds 7 and 9 were prepared in the same way.

Table 2

Order 4586/26 Circulation 644 Subscription VNIIPI USSR State Committee

Inventions and discoveries 113035, Moscow, 1-35, Raushsk nab. 4/5

Production and printing company, Uzhgorod, Projecto st., 4

1252330

8 Continuation of table 3

Claims (1)

METHOD FOR PRODUCING A REAGENT FOR PROCESSING DRILLING SOLUTIONS, including condensation of sulphite-alcohol stillage at a temperature of 90-95 C in the presence of phenol and a catalyst, characterized in that, in order to reduce the duration of the process while reducing the consumption of the reagent, urotropine is used as a catalyst in the following ratio ingredients, wt. X: Sulphite-alcohol barda 36 - 38X concentration Phenol Urotropin 100 SU an 1252330 12523.30