Wall fixing agent modified resin polymer for drilling fluid

A technology of modified resin and wall-bonding agent, which is applied in the field of petroleum drilling aids, wall-bonding agent-modified resin polymers for drilling fluids, and resin polymers modified by wall-bonding agents for drilling fluids, and can solve the problem of strengthening rock Insufficient cementation effect, reduced fluid loss, material toxicity, etc., to avoid wellbore collapse, enhance wellbore stability, and reduce fluid loss

Active Publication Date: 2020-06-05
石家庄华莱鼎盛科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these anti-slump agents have a certain ability to inhibit shale, they are not effective in enhancing the bonding force between rocks, and some materials have certain toxicity and pollution, which cannot guarantee the quality of drilling construction and the protection of environmental resources.
[0005] The above technologies have

Method used

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  • Wall fixing agent modified resin polymer for drilling fluid
  • Wall fixing agent modified resin polymer for drilling fluid
  • Wall fixing agent modified resin polymer for drilling fluid

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1: The wall-solidifying agent modified resin polymer for drilling fluid of the present invention is made of the raw materials of the following mass ratio: 200 parts of clear water, 20 parts of starch, and the mass percent concentration is 40% hydrogen 9 parts of sodium aqueous solution, 7 parts of 2-chloroethyltrimethylammonium chloride, 25 parts of acrylamide, 15 parts of methacryloyloxyethyltrimethylammonium chloride, 0.5 parts of initiator, nitrohumic acid 10 parts of potassium, 15 parts of pseudo-boehmite, 25 parts of auxiliary agent; the starch is corn flour; the particle size of the pseudo-boehmite is 120 mesh; the auxiliary agent is MgO, Al 2 o 3 Combination of two raw materials, MgO and Al 2 o 3 The mass ratio of potassium permanganate and potassium vanadate is 1.5:1. The initiator is a combination of potassium permanganate and potassium vanadate. The preparation method of the described wall-solidifying agent-modified resin polymer for drilling flu...

Embodiment 2

[0023] Embodiment 2: The wall-solidifying agent modified resin polymer for drilling fluid of the present invention is made of the raw materials of the following mass ratio: 210 parts of clear water, 25 parts of starch, and the mass percent concentration is 40% hydrogen 8 parts of sodium aqueous solution, 7 parts of 2-chloroethyltrimethylammonium chloride, 30 parts of acrylamide, 10 parts of methacryloyloxyethyltrimethylammonium chloride, 0.75 parts of initiator, nitrohumic acid 15 parts of potassium, 20 parts of pseudo-boehmite, 30 parts of auxiliary agent; the starch is sweet potato powder; the particle size of the pseudo-boehmite is 140 mesh; the auxiliary agent is MgO, Al 2 o 3 Combination of two raw materials, MgO and Al 2 o 3 The mass ratio of potassium permanganate and potassium vanadate is 1.5:1; the initiator is a combination of two raw materials, potassium permanganate and potassium vanadate, and the mass ratio of potassium permanganate and potassium vanadate is 1:1...

Embodiment 3

[0024] Embodiment 3: The wall-solidifying agent modified resin polymer for drilling fluid according to the present invention is made from the raw materials of the following mass ratio: 220 parts of clear water, 30 parts of starch, and a mass percent concentration of 40% hydrogen 10 parts of sodium aqueous solution, 9 parts of 2-chloroethyltrimethylammonium chloride, 25 parts of acrylamide, 20 parts of methacryloyloxyethyltrimethylammonium chloride, 0.9 parts of initiator, nitrohumic acid 15 parts of potassium, 15 parts of pseudo-boehmite, 30 parts of auxiliary agents; the starch is tapioca flour; the particle size of the pseudo-boehmite is 160 mesh; the auxiliary agents are MgO, Al 2 o 3 Combination of two raw materials, MgO and Al 2 o 3 The mass ratio of potassium permanganate and potassium vanadate is 1:2. The initiator is a combination of two raw materials, potassium permanganate and potassium vanadate. The preparation method of the described wall-solidifying agent-modif...

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Abstract

The invention discloses a wall fixing agent modified resin polymer for drilling fluid. The wall fixing agent is prepared from the following raw materials: 200 to 220 parts of clear water, 20 to 30 parts of starch, 8 to 10 parts of 40% sodium hydroxide aqueous solution, 5.0 to 10.0 parts of 2-chloroethyl trimethyl ammonium chloride, 20 to 30 parts of acrylamide, 10 to 20 parts of methacryloyloxyethyl trimethyl ammonium chloride, 0.5 to 1 part of initiator, 10 to 20 parts of potassium nitrohumate, 10 to 20 parts of pseudo-boehmite, 0 to 12 parts of poly(1,3-propylidene pyridine chloride) and 20to 30 parts of adjuvant. The performance of the wall fixing agent is as follows: the water content is less than or equal to 10.0%, the low-temperature medium-pressure filtration loss is less than or equal to 10 mL, the wall fixing agent is aged for 16 h at normal temperature, high temperature of 150 DEG C and 180 DEG C, and the high-temperature high-pressure filtration loss is less than or equal to 30.0 mL. The drilling fluid can resist the high temperature of 180 DEG C or above, the filter loss is effectively reduced, the cementing force between rocks is enhanced, and the breaking strength isimproved, so that the well wall is stabilized, collapse is avoided, the safety of drilling engineering is ensured, and the drilling fluid also has the advantages of environmental friendliness and good biodegradability.

Description

technical field [0001] The invention relates to a wall-solidifying agent for drilling fluid, in particular to a resin polymer modified by the wall-solidifying agent for drilling fluid, which belongs to petroleum drilling aids. The invention also relates to a preparation method of the wall-solidifying agent-modified resin polymer for drilling fluid. Background technique [0002] In oil and gas drilling engineering, the wellbore stability problem has always been a difficult problem in the drilling industry at home and abroad, and the economic loss due to wellbore instability is huge every year. Wellbore stability is the guarantee of high-quality drilling engineering, and it is of great significance to stabilize the wellbore for soft and easily collapsed formations and shale sections. [0003] The common liquid cementing agents for drilling fluid only start from the aspect of reducing the instability of drilling fluid. Since they cannot completely inhibit the hydration expansi...

Claims

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Application Information

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IPC IPC(8): C09K8/035C09K8/24C08F251/00C08F220/56
CPCC08F251/00C09K8/035C09K8/24C08F220/56
Inventor 陈利赵秀平
Owner 石家庄华莱鼎盛科技有限公司
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