A method of judging the properties of formation fluid by using the gas detection efficiency value
A technology of formation fluid and efficiency value, which is applied in the field of judging the properties of formation fluid, can solve the problems of the influence of gas measurement parameters, the lack of consideration of gas measurement data information, and the deterioration of the method effect, so as to improve the accuracy and overcome the limitations
Active Publication Date: 2021-04-09
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD +1
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Problems solved by technology
However, with the continuous complexity of drilling technology and drilling fluid performance, the response accuracy of gas logging parameters to formation fluid properties decreases, and the effect of the method becomes poor. The main problems are as follows:
[0005] 3. Gas measurement parameters are seriously affected by engineering parameters, but the current fluid interpretation methods use gas measurement data that have not been corrected by engineering parameters, and there must be limitations
[0006] 4. The current fluid interpretation methods apply single-point data, that is, the gas data at a certain depth point, without considering the information contained in the changes in the gas data at depth
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[0023] With reference to accompanying drawing of specification sheet, as the best implementation mode of the present invention, it discloses a kind of method utilizing gas detection efficiency value to discriminate formation fluid property, and its steps are:
[0024] a. According to the gas release mode of the gas measurement display section, establish a calculation method for the gas measurement efficiency value;
[0025] b. According to the calculation method of gas testing efficiency value, calculate the gas testing efficiency value of the gas testing section in the drilling and oil testing section in the area, and optimize the fluid discrimination value according to the difference of the oil testing results.
[0026] c. Combining the gas measurement efficiency value calculation formula and the fluid discrimination value, a regional gas measurement efficiency value fluid interpretation model is formed.
[0027] In the step a, according to the gas release mode of the gas me...
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The invention discloses a method for judging the properties of formation fluids by using the gas measurement efficiency value. The steps are as follows: a. Establishing a gas measurement efficiency value calculation method according to the gas measurement display section gas release mode; b. According to the gas measurement efficiency value calculation method Calculate the gas detection efficiency value of the gas detection display section in the well drilling test section in the area, and optimize the fluid discriminant value according to the difference of the oil test results; c. Combine the calculation formula of the gas detection efficiency value and the fluid discrimination value to form an area Fluid Interpretation Models for Gasometry Efficiency Values. This method introduces a new parameter gas logging efficiency value and its calculation method, expands the means of mud logging interpretation, and at the same time uses the gas logging efficiency value of the gas logging display section as a parameter for fluid discrimination, which not only fully reflects the gas logging display. The gas measurement feature also overcomes the limitations of using the gas measurement peak as the gas measurement display feature.
Description
technical field [0001] The invention relates to a method for judging formation fluid properties by using gas detection efficiency values, and belongs to the technical field of petroleum and natural gas exploration and development. Background technique [0002] Gas logging parameters are important parameters for mud logging interpretation. Especially for fluid interpretation, gas logging parameters are basically required, and are mainly based on the ratio difference between all hydrocarbons and each component in the gas logging data. to judge. However, with the continuous complexity of drilling technology and drilling fluid performance, the response accuracy of gas logging parameters to formation fluid properties decreases, and the effect of the method becomes poor. The main problems are as follows: [0003] 1. The current fluid interpretation method based on gas measurement parameters is mainly to find an effective fluid discrimination model through cluster analysis of regi...
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IPC IPC(8): E21B49/08
CPCE21B49/08E21B49/0875
Inventor 唐谢阮聪张梦琳赵磊何嘉
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD