SU1629307A1 - Reagent for treatment of drilling muds - Google Patents

Abstract

The invention relates to the drilling of oil and gas wells. The goal is to reduce the foaming and dusting of the reagent. It contains lignosulfonate (LS) and phosphatide concentrate (FC) in the following ratio, wt.%: LS-80 97, FC 3-20 "FC reagent is a waste obtained at the stage of hydration of unrefined cotton oil and consists of the following components, wt.%: phospholipids 40-50, oil 49-55 and moisture 1-5. Condensed sulfite-alcohol bard or - - ferrochromo lignosulfonate is used as a drug. The reagent has a low dustiness and does not cause foaming of the drilling fluid. 6 tabl "ate with

Description

The invention relates to the drilling of oil and gas wells, namely to reagents for the treatment of drilling fluids.

The purpose of the invention is to prevent the reagent from foaming and dusting.

The reagent includes lignosulfonate (LS) and phosphatide concentrate (FC) in the following ratio of ingredients, wt.%: LS 80-97; FC 3-20. / FC is a heavy tonnage of cottonseed oil production, obtained at the stage of mixing unrefined cottonseed oil with water or electrolyte and subsequent

separating the phosphate of the bottom emulsion from the hydrated cottonseed oil. The dried emulsion is a cotton FC of the following composition, wt.%:

Phospholipids40-50

Oil49-55

Moisture1-5

Condensed sulfite alcohol bard (FSC) or ferrochrome lignosulfonate (FHLS) are used as drugs.

Prepare the reagent by mixing the ingredients. It is advisable to introduce FC in drugs directly at

35 S &

w

ten

five

20

31629307

the production of the latter. For this, it is necessary to have a drug that has passed the drying stage, and FC to simultaneously feed the mixing device to homogenize the mixture.

For example, 90 g of FHLS are tied into the homogenizer and 10 g of PK are added with stirring. After obtaining a homogeneous mixture, the reagent is suitable for use.

. The composition of the reagents are given in table.1.

The effectiveness of the reagents is assessed by the foam ratio (& i), defined by the following:

Prepare 10% solutions of the known and proposed reagents with a volume of 250 ml. After mixing, the thieves are quickly poured into 500 ml measuring cylinders and the volumes of the foamed solutions are measured at specific time intervals (0.5, 15.30, 60 minutes). CoEF & foracy agents reagents (00 calculated by the ratio of the volume of foamed solutions to the original,

Table 2 shows the foaming coefficients immediately after mixing (C / 0) and 60 minutes later.

"60

The value of the wasp characterizes the ability of the reagent to foam, D (.Q foam stability in time.

As can be seen from Table 2, the presence of soap stock in the amount of 0.5% of the volume of the drug solution (or 5% in the mixture) reduces foaming, but does not prevent it even with increasing concentration of soap stock to 3% of the volume (or 30% in the mixture).

As the concentration of PKs in the reagent increases, the magnitude (X0 decreases significantly, moreover, the stability of the foam decreases markedly. So

commodity powder form, eliminates their dusting (table. 6J.

The quality assessment of the RCs is also carried out by their influence on the main technological parameters of fresh and mineralized (CaClg, NaCl) drilling muds in the temperature range of 20,200 ° Ct prepared with mud and sludge.

For comparison, in similar fields. They examine drilling muds treated with one of the drugs included in the CP with soap stock in the amount of 0.57. from their volume ,.

The drilling fluid is prepared as follows. The calculated amounts of pre-dispersed clay paste and water are mixed until a homogeneous suspension is obtained, then the necessary quantities of reagents are added and mixed until complete dissolution. Salts (CaCl, NaCl) are added last, slowly, in small portions. Barite is used as ut gel.

The treatment parameters of the drilling fluid reagent based on KSSB-2 are given in table 4; the treatment parameters of the inhibited drilling fluid with the reagent based on FHLS are given in Table 5; The treatment parameters of mineralized enhanced drilling mud with KSSB-4-based reagent are given in Table 6.

Thus, the proposed reagents are powdered substances, which, unlike the initial ones, are not flammable, they completely prevent foaming. When processing drilling solutions, foam is absent, while the introduction of a drug with cotton soaps results in a decrease in the specific gravity of the solution.

40

after 60 min in all rastaors containing 45P ° in and requires additional treatment of FC, the foam disappears (the volume of the solution with antifoam agents.

ra becomes equal to the initial f

Reagent for the treatment of drilling rigs, including lignosulfonate and

cotton oil production waste,

Together, the use of lignosulfone-50 is distinguished by the fact that

0

five

0

five

commodity powder form, eliminates their dusting (table. 6J.

The quality assessment of the RCs is also carried out by their influence on the main technological parameters of fresh and mineralized (CaClg, NaCl) drilling muds in the temperature range of 20,200 ° Ct prepared with mud and sludge.

For comparison, in similar fields. They examine drilling muds treated with one of the drugs included in the CP with soap stock in the amount of 0.57. from their volume ,.

The drilling fluid is prepared as follows. The calculated amounts of pre-dispersed clay paste and water are mixed until a homogeneous suspension is obtained, then the necessary quantities of reagents are added and mixed until complete dissolution. Salts (CaCl, NaCl) are added last, slowly, in small portions. Barite is used as ut gel.

The treatment parameters of the drilling fluid reagent based on KSSB-2 are given in table 4; the treatment parameters of the inhibited drilling fluid with the reagent based on FHLS are given in Table 5; The treatment parameters of mineralized enhanced drilling mud with KSSB-4-based reagent are given in Table 6.

Thus, the proposed reagents are powdered substances, which, unlike the initial ones, are not flammable, they completely prevent foaming. When processing drilling solutions, foam is absent, while the introduction of a drug with cotton soap leads to a decrease in the specific gravity of the solution.

0

comrade and soap stock directly on the hill does not prevent foaming of drilling fluids (Table 3), and also does not exclude the dusting of the lignosulphonates themselves, so their commodity form is in this ratio of ingredients,

The case remains unchanged. I Reagent on the basis of drugs and FC, obtained in the factory by mechanical mixing of the two ingredients), with preserved%:

Lignosulfonat Phosphatide concentrate

80-97 3-20

In order to prevent foaming and dusting of the reagent, phosphatide concentrate is used as a waste product for cottonseed oil production at the following levels:

Lignosulfonat Phosphatide concentrate

CU is a complex reagent.

1PC the rest.

Name Composition) Reagent

Based on KSSB-2

Table 2

Table3

Concentration of py-. Whether reagent mg / m

9.5

0.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9.8

Based on KSSV-4

On the basis of FHPS

2 0.5% soap stock

4 + 0.5% soap stock

+ 0.5% soap stock

16293078

Continued table. 3

1.1

0.0 0.0 0.0 0.0 0.0 0.0

and,

1,3

0.0 -0.0 0.0 0.0 0.0 8.9 9.2 10.0

Hubl cad

Editor N. Gunko

Compiled by L. Bestuzhev

Tehred M. Didyk

Order 409

Circulation 417

VNIIL of the State Committee for Inventions and Discoveries at the State Committee for Science and Technology of the USSR 4/5, Moscow, Zh-35, Raushsk nab. 113035

Gablntsa

Proofreader O. Tsille

Subscription

Claims (5)

Claim Reagent for processing drilling fluids, including lignosulfonate and cotton oil production waste, characterized in that, in order to prevent foaming and dusting of the reagent, phosphatide concentrate is used as a waste of cotton oil production in the following ratio of ingredients, wt.%: Lignosulfonate Phosphatide Concentrate The combined use of lignosulfone · 50 tov and soap stock directly on the drilling fluid does not prevent foaming of drilling fluids (Table 3), and does not exclude dusting of the lignosulfonates themselves, as their marketable form remains unchanged in this case. I A reagent based on drugs and FC obtained in the factory by mechanical mixing of the two ingredients, while maintaining. 80-97 3-20 Reagent* Table 1 Content, wt.% Drugs KP1 99 1 Krz 97 3 KP5 95 5 KRYU 90 10 KP15 85 fifteen KR20 80 20 KRZO 70 thirty KR is a complex reagent. Table 2 Reagent Composition Soder someone! FC forging composition * in wt.% KSSB-2 KSSB- - eleven eleven eleven FHLS | Soapstock <* 0 I 1 1 I 1 1 1 o 1 ¹ Q ¹ 1 ° 1 1 I 1 ---------------------- 1 1 1 0 ^ 60 0 (q | a (bo 1 - 0 1,6 1,50 1.8 1.4 2.92 1.9 2 - 1 1,5 1.45 1.44 1.4 2.7 1.9 3 - 3 1.38 1.3 1.24 1,2 .2.26 1.8 4 - 5 1, 28 1,2 1.15 1.12 2.04 1.7 5 - 10 1.19 1.19 1.12 1.12 1.72 1.68 6 - fifteen 1.18 1.18 1.12 1.12 1,60 1,56 7 - 20 1.18 1.18 1.12 1.12 1, 60 1,56 8 - thirty 1.18 1.18 1.12 1.12 1,60 1,56 9 0 - 1,6 1.44 1.8. 1.4 2.92 1.9 YU .1 - 1,2 1,0 1,6 1,0 2,32 1,0 eleven 3 - 1,04 1,0 1.36 1,0 1.68 1,0 12 5 - 1,0 1,0 1,2. 1,0 1.4 1,0 thirteen 10 1,0 1,0 1,04 1,0 1,2 1,0 14 fifteen - 1,0 1,0 1,0 1,0 1, 04 1,0 fifteen 20 - 1,0. 1,0 1,0. 1,0 1,0 1,0 16 thirty - 1,0 1,0 1,0 1,0 1,0 1,0 * LS - the rest. Table 3 Name ^ composition,) reagent Reagent dust concentration, mg / m 1 ί ' KSSB-2 Based on KSSB-2 9.5 KP1 0.9 Krz 0,0 KP5 0,0 KRYU 0,0 KP15 0,0 KR20 0,0 KRZO 0,0 KSSB-4 9.8 1629307 ⁸ Continuation of the table. 3 4 2 Based on KSSB-4 KP1 1,1 Krz . 0,0 KP5 0,0 KRYU 0,0 KRYU 0,0 KR2O 0,0 KRZO 0,0 FHPS Based on FHPS 11.0 KP1 1.3 Krz 0,0 KP5 U 0 KRYU 0,0 Kpis 0,0 KR20 0,0 KSSB-2 + 0.5% soap stock 8.9 KSSB-4 + 0.5% soap stock 9.2 FHPS + 0.5% soap stock 10.0 • * Table 4  Supplement, May.! E Temperature ter “bridging, •from The density of the solution p, g / cm ³ HC, s SNA 1 / S, dPa Water loss, cm * pH Reagent .. > . Oksil Foam-. the man 5.0 KSSB-2 + co-_ upstream 3.0 20 1,03 Foaming 5.0 KCCS-2 ♦ co upstream 3.0 0.2 20 1,07 33 24/42 3.0 0.2 5.0 KCCS-2 + stock * upstream. 3.0 O; 2 150 1,07 17 6/32 3.5 9.1 5.0 CREW 3.0. 20 1,07 20 9/21 2.5 10,4 5.0 CREW 3.0 150 1,07 18 8/15 3.0 9.2 5.0 KPIS 3.0 20. . 1,07 22 12/25 2,8 U 0 5.0 KPIS 3.0 150 1,07 19 10/21 3.0 9.2 5.0 KR20 3.0 20 1,07 24 15/28 3.0 9.8 5.0 KR2O 3.0 . ISO 1,07 20 12/25 3.4. 9.1 Table5 - Supplement, May. 2 Tempera ture of the ter * bridging ** ° C The density of the solution p, g / cm ' HC, s SNA 1 / S. · - dPa Water loss, see ’ ri ^Mr. Reagent ' CMC CaCl1 _g Foam *: villager 1.5 FHPS + cot source 0.8 0.7 20 1,03 Paioobrazovasha 1.5 FHPS + soap stock 0.8 0.7 0.4 20 1.06 42 23/42 4.2 8.2 1.5 FHPS + soap stock '0.8 0.7 0.4 150 1.06 34 26/36 6.6 8.0 1.5 KR-10 0.8 0.7 20 1.06 32 33/59 3.6 8.2 1.5 KP-IQ 0.8 0.7 150 1.06 34 26/43 6.5 8.0 1.5 KR15 0.8 0.7 20 1.06 thirty 29/41 4.0 8.1 1.5 KR15 0.8 0.7 150 1.06 32 22/38 6.3 8.0 1.5 KR20 0.8 0.7 20  1.06 28 27/43 4.2 8.0 1.5 KR20 0.8 0.7 150 .. 1.06 31 20/37 6.6 7.9 The tables Additive, X Tar temperature * MOOTdach, FROM The density of the solution p, g / cm * HC, s ATP 1 / S, dPa Water loss, sn * PH Reagent Oksnl "AC1 Foam the man 7.0 KSSV-4 + SOAP-> CTQK 2.0 10.0 20 1.10 Foaming 7.0 KSSV-4 + SOAP STOCK 2.0 10.0 0.3 20 1.14 60 81/165 7.0 8.25 7.0 KSSV-4 + SOAP stock 2.0 10.0 0.3 190 1.14 25 21/41 10.0 7.3 7.0 CREW 2.0 10.0 20 1.14 52 78/94 5,0 8.3 7.0 CREW 2.0 10.0 190 1.14 27 47/85 9.0 7.5 7.0 CREW 2.0 10.0 20 1.14 47 72/85 5.5 8.3 7.0 CREW 2.0 u oh 190 1.14 24 32/48 9.5 7.3 7.0.KP20 2.0 10.0 20 1.14 45 70/83 6.2 8.1 7.0 KR20 2.0 10.0 190 1.14 25 24/38 10.0 7.3 5.0 KSSV-4 ♦ SOAP stock 20 1, Yu Foaming 5.0 KSSV-4 + SOAP stock 0.8 20 1.21 39 24/50 3.6 7.75 5.0 KSSV-4 ♦ SOAP * stock Weighting vari- 0.8 20 1.66 42 30/56 3.4 7.65 TOM 5.0 KSSV-4 ♦ SOAP stoch Also 0.8 200 1.66 22 8/19 6.0 7.5 5.0 CREW 20 1.21 27 33/45 3.6 7.5 5.0 KR15 20 1.68 31 28/38 3.6 7.5 5.0 CREW 200 1.68 23 6/18 5.5 7.3