A kind of polyhydroxy oligomeric clay hydration inhibitor for deepwater drilling fluid and its synthesis method

A hydration inhibitor and deep-water drilling technology, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of insufficient inhibition of plugging performance, unstable rheological properties at low temperature, etc., and achieve a good suppression of plugging effect , easy to control, high yield effect

Active Publication Date: 2021-02-09
XI'AN PETROLEUM UNIVERSITY
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Problems solved by technology

However, these existing deepwater water-based drilling fluid systems more or less have problems such as unstable low-temperature rheological properties and insufficient system inhibition and plugging performance.

Method used

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  • A kind of polyhydroxy oligomeric clay hydration inhibitor for deepwater drilling fluid and its synthesis method
  • A kind of polyhydroxy oligomeric clay hydration inhibitor for deepwater drilling fluid and its synthesis method
  • A kind of polyhydroxy oligomeric clay hydration inhibitor for deepwater drilling fluid and its synthesis method

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Embodiment Construction

[0033] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0034] 1. Main materials and instruments

[0035] 1. Materials

[0036] KCl, MgCl 2 , CaCl 2 , NaCl, NaHCO 3 、Na 2 SO 4 , NaOH, Na 2 CO 3 , sodium allyl sulfonate (AS), methyl methacrylate (MMA), the above drugs are analytically pure, Chengdu Kelong Chemical Reagent Factory; trihydroxyethyl allyl ammonium bromide THAAB, homemade; laterite particles , taken from the Jialing River in Nanchong; Na-MMT, Xinjiang Xiazi Street Bentonite Co., Ltd.; barite (BaSO 4 ), Dongxiang Mining Company, Hanbin District, Ankang City; the drilling fluid treatment agents used in the drilling fluid formula are all provided by COSL.

[0037] 2. Instrument

[0038] Prestige-21 Fourier transform infrared spectrometer (4000~500cm -1 , KBr tablet), Beijing Rayleigh Analytical Instrument Company; Alliance e2695 Gel Permeation Chromatography, Singapore Wate...

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Abstract

The invention discloses a polyhydroxy oligomeric clay hydration inhibitor for deep water drilling fluid and a synthesis method thereof, wherein the polyhydroxy oligomeric clay hydration inhibitor is composed of sodium allyl sulfonate, trihydroxyethyl allyl Ammonium bromide and methyl methacrylate are copolymerized, and the structural formula is as follows: where x=3~7, y=2~4, z=1~3. The benefit of the present invention lies in that the polyhydroxy oligomeric clay hydration inhibitor for deepwater drilling fluid provided by the present invention can not only improve the suppression and plugging performance of the deepwater drilling fluid system, but also adjust the rheology of the deepwater drilling fluid system at low temperature .

Description

technical field [0001] The invention relates to a clay hydration inhibitor and a synthesis method thereof, in particular to a polyhydroxy oligomeric clay hydration inhibitor for deep-water drilling fluid and a synthesis method thereof, belonging to the technical field of marine deep-water oil and gas exploration. Background technique [0002] With the continuous deepening of oil exploration and development, drilling operations have entered deep water areas. Deepwater oil and gas resources are mainly distributed in the Gulf of Mexico, Brazil, West Africa, East Africa, the Mediterranean, India, Australia, and the South China Sea. The State Council's "National Medium- and Long-Term Science and Technology Development Plan (2006-2020)" has made a clear statement on the effective development and utilization of marine resources. Deepwater drilling is an inevitable trend in the future development of the world to alleviate the energy crisis. In recent years, deepwater drilling accou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/035C08F228/02C08F226/02C08F220/14
Inventor 都伟超陈刚刘峰张洁
Owner XI'AN PETROLEUM UNIVERSITY
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