Method and device for prediction while drilling of gas reservoir output

A gas layer and production technology, applied in surveying, earthmoving, wellbore/well components, etc., can solve the problems of high degree of mastery, difficult to obtain, multi-parameter calculation, etc. Drilling cost, the effect of expanding the scope of application
CN107605474AActive Publication Date: 2018-01-19SINOPEC SSC +3
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SINOPEC SSC
Publication Date
2018-01-19

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Abstract

The invention belongs to the technical field of oil and gas exploration and development, and particularly relates to a method and device for prediction while drilling of gas reservoir output. The method for prediction while drilling of the gas reservoir output, namely the natural gas output, comprises the steps of establishing a gas reservoir output prediction model according to gas reservoir dataof a drilled well; predicting the gas reservoir output of a drilling well according to the established gas reservoir output prediction model through the gas reservoir data of the drilling well; and analyzing the potential capacity of the drilling well. The device for prediction while drilling of the gas reservoir output comprises a prediction model establishing module and a prediction analysis module. The natural gas content in broken rock is recovered through the drilling data, logging data and the like, the recoverable gas content index is figured out, and on this basis, the well natural gas output is predicted according to the total volume of a reservoir stratum within the gas production radius range. The method can be applied to assessment of the overall mining potential of the natural gas drilling well and a gas reservoir in the development stage and provides a basis for completion program design and gas production engineering ground construction.
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Description

technical field

[0001] The invention belongs to the field of exploration and development of oil and natural gas, and in particular relates to a method and a device for predicting gas layer production while drilling. Background technique

[0002] Gas logging is a mud logging method that uses a gas detection system or detects and analyzes the content of hydrocarbon gases separated from drilling fluid through a drilling fluid degasser at a certain period of time. The gas measurement value is the continuous detection of the hydrocarbon gas content in the drilling fluid by the gas logging equipment according to a certain analysis period. It reflects the gas content in the pores of the broken rock per unit time, and is the earliest and most intuitive reflection of the gas layer production.

[0003] At present, there are several traditional production capacity evaluation methods: the analytical method mainly uses highly abstract physical models, and calculates through the law of de...

Claims

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