Emulsifying agent for oil base drilling fluid and preparation method thereof

An oil-based drilling fluid and emulsifier technology, applied in the field of petroleum exploration, can solve the problems of difficult degradation of treatment agents and emulsifiers, poor dischargeability, outstanding treatment problems, etc., and achieve high electrical stability of the emulsion, low cost, and emulsification rate high effect

Inactive Publication Date: 2015-04-22
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, oil-based drilling fluids (dispersed phase content ≤ 40%) have been widely used, but there are certain deficiencies in environmental protection: ①Oil-based drilling fluids are superior in temperature and salt resistance, resulting in prominent post-processing problems; ②The base oil is petroleum The downstream products of refining and chemical enterprises are precious resources and should be used rationally; ③The treatment agent and emulsifier are difficult to degrade and have poor dischargeability

Method used

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  • Emulsifying agent for oil base drilling fluid and preparation method thereof
  • Emulsifying agent for oil base drilling fluid and preparation method thereof
  • Emulsifying agent for oil base drilling fluid and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Present embodiment provides a kind of preparation method of emulsifier for oil-based drilling fluid, it comprises the following steps:

[0024] Put 30 parts of oleic acid, 2 parts of solid NaOH, and 200 parts of tap water into the autoclave in parts by mass, slowly feed nitrogen into the autoclave until the pressure is 0.5MPa, heat the autoclave to 100°C and stir for 3 hours After that, the material in the reaction kettle was completely dissolved to obtain a sodium oleate solution; 5 parts of CaCl were added to the sodium oleate solution 2 After continuing to stir for 2 hours, the reaction was terminated; after centrifuging the above mixed solution with a centrifuge, the separated product was dried at a low temperature (the temperature was lower than 70°C) to obtain solid calcium oleate, the purity of the calcium oleate is >90%;

[0025] Add 10 parts of tap water and 100 parts of soybean oil into the autoclave and stir evenly, slowly feed nitrogen into the autoclave, t...

Embodiment 2

[0028] Present embodiment provides a kind of preparation method of emulsifier for oil-based drilling fluid, it comprises the following steps:

[0029] Put 30 parts of palmitic acid, 2 parts of solid NaOH, and 200 parts of tap water into the autoclave in parts by mass, slowly feed nitrogen into the autoclave until the pressure is 0.6MPa, heat the autoclave to 90°C and stir for 2 hours After that, the materials in the reaction kettle were completely dissolved to obtain a sodium palmitate solution; 5 parts of MgCl were added to the sodium palmitate solution 2 After continuing to stir for 1 hour, the reaction was terminated; after centrifuging the above mixed solution with a centrifuge, the separated product was dried at a low temperature (the temperature was lower than 70° C.) to obtain solid magnesium palmitate. The purity of the magnesium palmitate was is >90%;

[0030] Add 10 parts of tap water and 100 parts of cottonseed oil into the autoclave and stir evenly, slowly pass ni...

Embodiment 3

[0033] Present embodiment provides a kind of preparation method of emulsifier for oil-based drilling fluid, it comprises the following steps:

[0034] Put 30 parts of lauric acid, 2 parts of solid NaOH, and 200 parts of tap water into the autoclave in parts by mass, slowly feed nitrogen into the autoclave until the pressure is 0.7MPa, heat the autoclave to 100°C and stir for 2 hours Finally, the material in the reaction kettle was completely dissolved to obtain a sodium laurate solution; 5 parts of BaCl were added to the sodium laurate solution 2 After continuing to stir for 1 hour, the reaction was terminated; after the above-mentioned mixed solution was centrifuged with a centrifuge, the product obtained by separation was dried at a low temperature (the temperature was lower than 70° C.) to obtain solid barium laurate. The purity of the barium laurate was is >90%;

[0035] Add 10 parts of tap water and 100 parts of coconut oil into the autoclave and stir evenly, slowly feed...

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Abstract

The invention provides an emulsifying agent for oil base drilling fluid and a preparation method thereof. The emulsifying agent for the oil base drilling fluid comprises, by mass, 1-2 parts of higher fatty acid salt and 3-5 parts of polyhydroxy alcohol higher fatty acid ester. The preparation method of the emulsifying agent for the oil base drilling fluid includes the steps of mixing the higher fatty acid salt and the polyhydroxy alcohol higher fatty acid ester, and obtaining the emulsifying agent for the oil base drilling fluid. The emulsifying agent for the oil base drilling fluid is high efficient, environmental friendly, wide in application range, capable of giving play to higher properties in diesel oil, white oil, biodiesel, gas-to-liquid and vegetable oil systems, high in dispersibility, high in emulsification ratio, and high in electrical stability of emulsion.

Description

technical field [0001] The invention relates to an emulsifier for oil-based drilling fluid and a preparation method thereof, belonging to the field of petroleum exploration. Background technique [0002] In recent years, oil-based drilling fluids (dispersed phase content ≤ 40%) have been widely used, but there are certain deficiencies in environmental protection: ①Oil-based drilling fluids are superior in temperature and salt resistance, resulting in prominent post-processing problems; ②The base oil is petroleum The downstream products of refining and chemical enterprises are precious resources and should be used rationally; ③ treatment agents and emulsifiers are difficult to degrade and have poor dischargeability. Oil-based drilling fluids have insufficient theoretical knowledge and technical reserves on environmental protection and waste disposal, and it is difficult to meet the requirements of dischargeability and environmental friendliness. This is also the key to the oi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/36
CPCC09K8/035C09K8/36
Inventor 张洁王双威赵志良李龙冯杰杨宇平刘继亮李梅康晓娜
Owner BC P INC CHINA NAT PETROLEUM CORP
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