Method for treating potassium ammonium group drilling fluid rock debris
A treatment method and drilling fluid technology, which can be used in earth-moving drilling, flushing wellbore, wellbore/well components, etc., and can solve the problems of large dosage, excessive COD, and high pH.
Inactive Publication Date: 2020-10-27
中石化石油工程技术服务有限公司 +2
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Problems solved by technology
With the improvement of my country's environmental protection regulations, the current consolidation stabilization treatment formula can no longer meet the requirements of potassium ammonium-based drilling fluid cuttings treatment, and there are defects such as high pH after treatment, excessive COD, and large dosage.
Method used
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Embodiment 1
[0035] Add silicon micropowder, aluminum salt and iron salt with a mass ratio of 1:5:2 in sequence and stir and mix for 3 minutes at a speed of 150 rpm to obtain a rock debris breaker.
Embodiment 2
[0037] Add silicon micropowder, aluminum salt and iron salt with a mass ratio of 4:15:2 in sequence, and stir and mix at a speed of 250 rpm for 3 minutes to obtain a rock debris breaker.
Embodiment 3
[0039] Sequentially add silicon micropowder, aluminum salt and iron salt with a mass ratio of 1:12:5 and stir and mix for 4 minutes at a speed of 200 rpm to obtain a rock debris breaker.
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The invention provides a method for treating potassium ammonium group drilling fluid rock debris. The method comprises the step that a rock debris gel breaker and a rock debris solidification agent are sequentially added into rock debris generated in the potassium ammonium group drilling fluid drilling process to be stirred and mixed. Treatment debris obtained through the treatment method can reach the standard request I of standards for pollution control over the storage and disposal site for general industrial solid wastes. The solidification stabilization technology is adopted, the gel breaker is adopted for carrying out breaking stabilization on the rock debris, then the solidification agent is adopted for carrying out solidification and closing on the rock debris, and the method has the advantages that the treatment process is simple and the treatment effect is stable.
Description
technical field [0001] The invention relates to the technical field of drilling solid waste treatment, in particular to a potassium ammonium-based drilling fluid cuttings treatment method. Background technique [0002] Potassium-ammonium-based drilling fluids are widely used in oil and gas exploration and development, especially in Xinjiang and Inner Mongolia, because of their strong ability to inhibit clay hydration and dispersion, strong ability to control harmful solid phases, and good shear dilution. The common formula of potassium ammonium-based drilling fluid is: 3%~4% sodium bentonite, 0.2%~0.3% potassium hydroxide, 0.3%~0.5% potassium polyacrylate, 0.5%~1% hydrolyzed polyacrylonitrile ammonium salt, 2%~ 3% sulfonated phenolic resin, 1%-2% sulfonated lignite, 2%-3% non-fluorescent anti-slump agent, 2%-6% graphite powder. The cuttings produced during the drilling process carry a large amount of drilling fluid, which is easy to pollute the environment, and has the char...
Claims
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IPC IPC(8): E21B21/06
CPCE21B21/066
Inventor 吕宁超马金张晓刚张鑫杨云鹏詹适新
Owner 中石化石油工程技术服务有限公司