Drilling fluid performance detection method and device
A drilling fluid and performance technology, applied in the field of drilling, can solve problems such as low accuracy of analysis results, low work efficiency, and inability to accurately determine the intrinsic reasons for changes in drilling fluid performance
Active Publication Date: 2020-07-07
PETROCHINA CO LTD
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Problems solved by technology
[0005] In related technologies, when testing drilling fluid, it is only limited to the measurement of apparent data such as conventional performance parameters, and cannot accurately determine the intrinsic cause of the change in drilling fluid performance.
It is necessary to indirectly infer the essential cause of the performance change of drilling fluid through multiple combined experiments, which leads to low work efficiency and low accuracy of analysis results
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[0052] Unless otherwise defined, all technical terms used in the embodiments of the present invention have the same meanings as commonly understood by those skilled in the art. In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0053] It should be noted that, in the embodiment of the present invention, the drilling fluid filtrate refers to a homogeneous solution without solid phase impurities obtained after filtering the drilling fluid.
[0054] Ultraviolet-visible spectrophotometry is a method for measuring the absorbance of substances in the wavelength range of 200-1000nm, which is used for identification, impurity inspection and quantitative determination. When light passes through the solution of the substance to be measured, the degree of absorption of light by the substance varies with ...
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The invention discloses a drilling fluid performance detection method and device, and belongs to the technical field of drilling. According to the method, the mass concentration and the weight-averagemolecular weight of the treating agent in the drilling fluid filtrate are respectively detected by utilizing an ultraviolet-visible spectrophotometry and an ultracentrifugal sedimentation method, andthe performance of the drilling fluid is comprehensively judged by combining detection results of the two methods. The method specifically comprises the steps of obtaining a standard drilling fluid formula; obtaining a standard characteristic spectrum of each treating agent by utilizing a standard formula and an ultraviolet-visible spectrophotometry; according to the actual absorbance of each treating agent in the target drilling fluid filtrate, comparing the standard characteristic spectrum, and determining the mass concentration of each treating agent in the target drilling fluid filtrate;measuring the weight-average molecular weight change condition of the treating agent in the filtrate of the target drilling fluid and the standard drilling fluid by using an ultracentrifugal sedimentation method; and based on the above, judging the target drilling fluid performance comprehensively. According to the method, the performance of the drilling fluid can be simply, reliably, accurately and effectively detected, and the most direct and reliable thought and method are provided for maintaining and treating the drilling fluid.
Description
technical field [0001] The invention relates to the technical field of drilling, in particular to a method and device for detecting the performance of drilling fluid. Background technique [0002] Drilling fluid plays a vital role in drilling engineering. It can balance formation pressure, carry cuttings, purify wellbore, cool drilling tools, transmit hydrodynamic force, and maintain wellbore stability, etc. Drilling fluid includes: solid phase particles, various treatment agents, and liquid phase. The performance of the drilling fluid has an important impact on the smooth progress of the drilling project. The good performance of the drilling fluid is an important guarantee for safe and efficient drilling. Based on the above, it is necessary to test the drilling fluid in order to facilitate the use of drilling fluid with good performance for drilling. [0003] Related technologies analyze the performance of the drilling fluid by detecting parameters such as the fluid loss ...
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Login to View More IPC IPC(8): G01N21/33G01N21/31
CPCG01N21/33G01N21/31G01N2021/3196
Inventor 马辉运王先兵杨欢王锐汪瑶周代生杨锐华王斌肖勇军杨毅
Owner PETROCHINA CO LTD