CN101613596A - Borehole wall stabilizer - Google Patents
Borehole wall stabilizer Download PDFInfo
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- CN101613596A CN101613596A CN200910070034A CN200910070034A CN101613596A CN 101613596 A CN101613596 A CN 101613596A CN 200910070034 A CN200910070034 A CN 200910070034A CN 200910070034 A CN200910070034 A CN 200910070034A CN 101613596 A CN101613596 A CN 101613596A
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Abstract
The present invention relates to a kind of borehole wall stabilizer that in Process of Oil Well Drilling the borehole wall is shielded, this stablizer is composed of the following components by weight percentage: wilkinite 30%-50%; Hydrolyzed polyacrylonitrile ammonium salt 20%-40%; Graphite 20%-40%.Use dry powder blend equipment that above compositions in weight percentage is mixed and made into.The beneficial effect that the present invention produced is: in Process of Oil Well Drilling, use the present invention can reduce and avoid to cause easily because of borehole well instability the generation of drilling failure.Simultaneously, owing to rise, drill through down smooth, electrical measurement operation and running casing are smooth, and can significantly reduce, brill time following and well logging, drifting time, thereby shorten drilling period, reduction drilling expense, be that a kind of market outlook are had an optimistic view of, widely used new-type mortar treatment agent.
Description
Technical field
The present invention relates to the mud conditioner that petroleum drilling uses, relate in particular to a kind of borehole wall stabilizer that in Process of Oil Well Drilling, the borehole wall is shielded (code name WBS, the abbreviation of Well Bore Stablizer).
Background technology
Oil drilling is the industry of an excessive risk, high investment, and the whether smooth key that drilling engineering and data are obtained is the protection of the borehole wall and stablizing of well.Because of the mud dehydration, the drilling failure that borehole well instability causes is a lot of in the present drilling engineering.As: the borehole wall collapse and cause bit freezing, creep into difficulty, well logging difficulty, running casing be difficult, even cause drilling tool to be buried, Serious Accident such as well is scrapped, bring about great losses for enterprise and country.Especially the drilling recent years industry is used wireless drilling well logging (LWD) more, in case drilling tool is buried, the neutron source well that falls will cause great environmental pollution accident.
Summary of the invention
The present invention is in order to solve the problem that above prior art exists; developed a kind of borehole wall stabilizer WBS; this stablizer can form the thin and hard mud cake of one deck on the borehole wall; as descended one deck liquid sleeve pipe in well; thereby protection and stabilizing borehole prevent and reduce to adhere to bit freezing, drilling tool by the generation of accidents such as burying effectively.
A kind of borehole wall stabilizer, this stablizer is composed of the following components by weight percentage:
Wilkinite 30%-50%
Hydrolyzed polyacrylonitrile ammonium salt 20%-40%
Graphite 20%-40%.
The mechanism of action of borehole wall stabilizer:
1. increase skeleton particle and the elasticity of forming mud cake, make the down-hole mud cake under high pressure fine and close more, mud cake quality is better, reduces the High Temperature High Pressure dehydration of mud.
2. owing to the fracture easily at high temperature of high molecular polymer molecular chain in the mud conditioner, this product can reduce the generation of this fracture, thereby improves the temperature resistance of mud.
3. increase the oilness of mud cake skeleton, improve the oilness of mud simultaneously.
Mud is that Process of Oil Well Drilling is used for a kind of liquid of round-robin, and it has multiple one-tenth to be grouped into, and main function is circulation and cooling drill bit and drilling tool, carry drilling cuttings, the firm borehole wall etc.
Mud cake be mud under differential pressure action, the protective layer that the one deck that forms on the borehole wall is thin and hard, main effect is the protection borehole wall.
The High Temperature High Pressure dehydration be mud under certain temperature and pressure, the fluid loss on the unit surface is a parameter weighing the mud high-temperature behavior, the few more mud high-temperature behavior of fluid loss is good more usually, the borehole wall is firm more.
The beneficial effect that the present invention produced is: in Process of Oil Well Drilling, use the present invention can reduce and avoid to cause easily because of borehole well instability the generation of drilling failure.Simultaneously, owing to rise, drill through down smooth, electrical measurement operation and running casing are smooth, and can significantly reduce, brill time following and well logging, drifting time, thereby shorten drilling period, reduction drilling expense, be that a kind of market outlook are had an optimistic view of, widely used new-type mortar treatment agent.
Embodiment
The invention will be further described below in conjunction with embodiment.
The optimum weight per-cent of each component of borehole wall stabilizer is:
Wilkinite 40%
Hydrolyzed polyacrylonitrile ammonium salt 30%
Graphite 30%.
Wilkinite is selected for use and is met SY5490-93 drilling fluid sodium bentonite.
The quality control standards (QCS) of sodium bentonite:
1, sensory properties: this product is white or pink powder shape material.
2, moisture: moisture content must not surpass 12.0%.
3, main component: wilkinite contains the montmorillonite of 85-90%, silicon oxide 50-75%, and plumbous oxide 15-25%, proportion 2.4-2.8 still contains constant and trace elements such as P, KNa, Ca, Mg, Fe, Cu, Mn, Cr, Si, Ni, Ti, V in addition.
4, granularity 100-120 order.
Hydrolyzed polyacrylonitrile ammonium salt code name: NH4-HPAN.Operative norm: Q/CNPC89-2003.The hydrolyzed polyacrylonitrile ammonium salt is a pale yellow powder, and it is neutral that water soluble, the aqueous solution are.
The technical requirements of hydrolyzed polyacrylonitrile ammonium salt:
Table 1 hydrolyzed polyacrylonitrile ammonium salt performance index
Table 2 hydrolyzed polyacrylonitrile ammonium salt physicochemical property
| Project | Outward appearance | Tail over and put % | Ammonium contains puts % | Baking vector % | Ignition residue % |
| Index | Free-pouring powder and particle | ??≤5.0 | ??≥7.0 | ??≤10.0 | ??≤2.0 |
Graphite selects for use drilling fluid with activating refined graphite powder.Technological standard Q/71304201-6.76-2007.The smart mealiness energy of activation graphite index request:
Black (brown) coloured particles, moisture≤20%;
Oilness reduced rate 〉=45%;
Base slurry+1% dosage, apparent viscosity does not increase, and fluid loss does not increase.
The raw material of borehole wall stabilizer uses dry powder blend equipment to mix, and uses the moistureproof and waterproof packing.Dry powder blend equipment is selected airtight dry powder V-arrangement mixing machine for use for the needs of environmentally-friendly sanitary, and model is VH-2.5, manufacturer: Shahe, Laizhou town good fortune is along machine works.
The production technique of borehole wall stabilizer is as follows:
1, according to the part by weight of prescription, add wilkinite, graphite, hydrolyzed polyacrylonitrile ammonium salt successively at charging opening, start mixed 2 hours, and mixture homogeneity requires 〉=99%, otherwise continued to mix 2 hours, till mixing.
2, mix the back and shut down, from discharge hole for discharge, 100 orders that sieve, triage is done environmental protection treatment by waste product.
3, weigh after, use the moistureproof and waterproof fibrage bag packing have the plastic lining film, the 25Kg/ bag.
Claims (3)
1, a kind of borehole wall stabilizer, this stablizer is composed of the following components by weight percentage:
Wilkinite 30%-50%
Hydrolyzed polyacrylonitrile ammonium salt 20%-40%
Graphite 20%-40%.
2, borehole wall stabilizer according to claim 1, wherein wilkinite is a sodium bentonite.
3, borehole wall stabilizer according to claim 1, wherein graphite is the activation refined graphite powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100700347A CN101613596B (en) | 2009-08-04 | 2009-08-04 | Sidewall stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100700347A CN101613596B (en) | 2009-08-04 | 2009-08-04 | Sidewall stabilizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101613596A true CN101613596A (en) | 2009-12-30 |
| CN101613596B CN101613596B (en) | 2011-12-07 |
Family
ID=41493490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100700347A Expired - Fee Related CN101613596B (en) | 2009-08-04 | 2009-08-04 | Sidewall stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101613596B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013482A (en) * | 2013-01-16 | 2013-04-03 | 天津塘沽海德科技有限公司 | Composite well wall stabilizer |
| CN105295871A (en) * | 2014-06-19 | 2016-02-03 | 成都棕通石油配件有限公司 | Mud used for oil-testing layer |
| CN108531151A (en) * | 2018-04-26 | 2018-09-14 | 中铁隧道集团二处有限公司 | Push-bench anti-drag mud and preparation method thereof in one planting sand soil property |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6152227A (en) * | 1997-10-24 | 2000-11-28 | Baroid Technology, Inc. | Drilling and cementing through shallow waterflows |
| CN1171969C (en) * | 2002-01-14 | 2004-10-20 | 中国石油化工股份有限公司 | Temporary leakage-stopping agent for well drilling shielding and its application |
| US7067004B2 (en) * | 2004-01-29 | 2006-06-27 | Halliburton Energy Services, Inc. | Grout compositions having high thermal conductivities and methods of using the same |
| CN100387677C (en) * | 2006-11-06 | 2008-05-14 | 大庆油田建设集团有限责任公司 | Jacking slurry for pipe jacking operation |
-
2009
- 2009-08-04 CN CN2009100700347A patent/CN101613596B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013482A (en) * | 2013-01-16 | 2013-04-03 | 天津塘沽海德科技有限公司 | Composite well wall stabilizer |
| CN103013482B (en) * | 2013-01-16 | 2014-07-23 | 天津塘沽海德科技有限公司 | Composite well wall stabilizer |
| CN105295871A (en) * | 2014-06-19 | 2016-02-03 | 成都棕通石油配件有限公司 | Mud used for oil-testing layer |
| CN108531151A (en) * | 2018-04-26 | 2018-09-14 | 中铁隧道集团二处有限公司 | Push-bench anti-drag mud and preparation method thereof in one planting sand soil property |
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| Publication number | Publication date |
|---|---|
| CN101613596B (en) | 2011-12-07 |
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