Fast drilling fluid and preparation technique thereof

A manufacturing process and drilling fluid technology, which is applied in the field of fast drilling fluid and manufacturing process, can solve the problems of high drilling cost and achieve the effects of low drilling cost, drilling performance and wellbore stability, and increased drilling speed

Inactive Publication Date: 2008-05-28
CNPC DRILLING RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, a lot of research work has been done on rapid drilling fluid technology at home and abroad. In addition to oil-based drilling fluids, water-based rapid drilling fluids are mostly polyols (polyethylene glycol, polyglycerol, MEG), silicate and other types. , although the drilling speed has been improved, but generally speaking, the drilling cost is high, and there are still problems in the bit bagging, drilling performance and wellbore stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: a kind of quick drilling fluid, this quick drilling fluid comprises the sodium soil of 4 parts by mass, the organosilicate semipermeable film agent of 0.25 parts by mass, the modified starch of 2 parts by mass will Filtrate loss agent (purchased), sulfomethyl lignite (purchased) with 2 parts by mass, zwitterionic coating agent (purchased) with 0.25 parts by mass, rapid drilling with 0.35 parts by mass agent and 95 parts by mass of water; the above-mentioned components are mixed to form fast drilling fluid.

[0025] Wherein the organic silicate semipermeable film composition ratio comprises 100 parts by mass of glycerin, 20% silicic acid of 100 parts by mass, 5% potassium hydroxide with a concentration of 70 parts by mass and 120 parts by mass clean water;

[0026] The manufacturing process of this organic silicate semi-permeable membrane agent is:

[0027] 1) Weigh the above components and put them into the reaction kettle, stir evenly;

[0028] 2) Heat...

Embodiment 2

[0057] Embodiment 2: A kind of quick drilling fluid, the composition ratio of this quick drilling fluid comprises the sodium soil of 3 parts by mass, the organosilicate semipermeable membrane agent of 0.2 parts by mass, the modified starch of 1 part by mass Filtrate loss agent (purchased), sulfomethyl lignite (purchased) of 1.5 parts by mass, zwitterionic coating agent (purchased) of 0.2 parts by mass, fast Drilling agent and 90 parts by mass of water.

[0058] Wherein the organic silicate semipermeable membrane agent composition ratio comprises 60 parts by mass of glycerin, 10% silicic acid of 140 parts by mass, 10% potassium hydroxide with a concentration of 110 parts by mass and 150 parts by mass clear water; the manufacturing process of this organosilicate semipermeable membrane agent is:

[0059] 1) Weigh the above components and put them into the reaction kettle, stir evenly;

[0060] 2) Heat the above solution to 60°C and stir for 1 h.

[0061] Wherein, the compositi...

Embodiment 3

[0063] Embodiment 3: a kind of quick drilling fluid, this quick drilling fluid comprises the sodium soil of 5 parts by mass, the organosilicate semipermeable membrane agent of 0.3 parts by mass, the modified starch of 3 parts by mass will Fluid loss agent (outsourced), sulfomethyl lignite (outsourced) with 2.5 parts by mass, zwitterionic coating agent (purchased) with 0.3 parts by mass, rapid drilling with 0.5 parts by mass agent and 100 parts by mass of water.

[0064] Wherein the organic silicate semipermeable membrane agent composition ratio comprises 140 parts by mass of glycerin, 30% silicic acid of 60 parts by mass, 8% potassium hydroxide with a concentration of 40 parts by mass and 70 parts by mass clear water; the manufacturing process of this organosilicate semipermeable membrane agent is:

[0065] 1) Weigh the above components and put them into the reaction kettle, stir evenly;

[0066] 2) Heat the above solution to 140°C and stir for 4h.

[0067] Wherein, the com...

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PUM

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Abstract

The invention discloses a rapid drilling fluid, of which the component proportion according to mass parts comprises 3-5 parts of sodium soil, 0.2-0.3 part of organosilicate semipermeable membrane agent, 1-3 parts of modified starch filtrate reducer, 1.5-2.5 parts of sulfonated-methyl brown coal, 0.2-0.3 part of zwitterions encrusting agent, 0.2-0.5 part of rapid drilling agent and 90-100 parts of water. The rapid drilling fluid is water based drilling fluid by which drilling speed is greatly increases. Simultaneously, the drilling cost is low, no mud drum is produced in drilling process, and the drilling performance and the well wall are stable.

Description

technical field [0001] The invention relates to the technical field of drilling, in particular to a rapid drilling fluid (inhibitor) and a manufacturing process. Background technique [0002] With the continuous expansion of the field of oil and gas exploration and development, the formations encountered in the drilling process are becoming more and more complex, the wells are getting deeper and deeper, the complex situation in the downhole is even more unpredictable, and the difficulty of handling is also increasing. When mud shale, soft shale, sticky shale and expansive shale are formed, such formations are easy to hydrate and expand, leading to complex downhole accidents, especially in deep well drilling in the west, when drilling encounters strong stress structures in piedmont and large The problem of wellbore instability in the shale well section is particularly prominent. At the same time, the drilled cuttings have strong adhesion properties, which greatly enhances the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/14
Inventor 杨泽星孙金生
Owner CNPC DRILLING RES INST
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