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Shale oil horizontal well track design and on-site tracking adjustment research method

A trajectory design, shale oil technology, applied in drilling equipment and methods, drilling equipment, calculations, etc., can solve the lack of technical series for shale oil horizontal wells, and the selection and implementation methods of conventional horizontal wells are not applicable to shale oil horizontal wells Deployment and other issues to achieve the effect of ensuring maximum effectiveness, improving seismic interpretation accuracy, and reasonable design

Inactive Publication Date: 2019-07-02
PETROCHINA CO LTD
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Problems solved by technology

[0004] At present, the exploration of shale oil in Dagang Oilfield and other exploration areas in China is still in the stage of exploration and research, and the optimization and implementation of shale oil horizontal wells still lack a complete technical series as a reference, while the selection and implementation methods of conventional horizontal wells are not suitable for guidance Shale oil horizontal well deployment, so there is an urgent need for a shale oil horizontal well trajectory design and field tracking adjustment research method

Method used

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  • Shale oil horizontal well track design and on-site tracking adjustment research method
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  • Shale oil horizontal well track design and on-site tracking adjustment research method

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Embodiment 1

[0055] Calibrate the characteristics of the electric logging curve of the oil layer according to the oil test results, use the logging data such as acoustic wave time difference, natural gamma ray, resistivity, and nuclear magnetic logging to construct the intersection chart, establish the identification standard of shale oil sweet spots, and classify single well shale oil Dessert Thickness to Hole II 1 Taking the oil group as an example, the distribution area of ​​sweet spots with a thickness greater than 30m reaches 130km 2 .

[0056] The top surface of the shale oil sweet spot is used as the layer to complete the seismic interpretation and structural industrial mapping, and the Ro contour map is drawn based on the geochemical analysis test results, and the ternary coupling analysis is carried out through the sweet spot thickness, burial depth and shale thermal evolution degree , it is clear that the shale oil sweet spots in the GD area are thick, widely distributed, and de...

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Abstract

The invention discloses a shale oil horizontal well track design and on-site tracking adjustment research method. The method comprises shale oil sweet spot identification and evaluation, horizontal well optimization and track design and shale oil horizontal well on-site tracking adjustment. A 'four-optimal-two-precision' method formed by the shale oil horizontal well track design and on-site tracking adjustment research method lays a foundation for realizing integration of high and stable yield of shale oil in a blocked lake basin and production and storage increase. A set of technical methodis provided for carrying out horizontal well position optimization design research and drilling well dynamic tracking analysis in a shale oil development area, and the method has great reference and popularization significance.

Description

technical field [0001] The invention relates to a research method, in particular to a research method for shale oil horizontal well trajectory design and on-site tracking adjustment, and belongs to the technical field of comprehensive geological evaluation for petroleum exploration. Background technique [0002] The Kong 2 Member in the Cangdong Sag is dominated by depression-type sediments, and a large set of fine-grained sedimentary rocks are stably developed in the main lake basin area, mainly including clay rocks (grain size less than 0.05 mm), fine-grained felsic sedimentary rocks, fine-grained mixed sedimentary rocks, Dolomite and other four major rock types, with well-developed lamination and texture, are collectively called shale formations, with high brittleness index. The closed lake basin with relatively oxygen-poor and saline water during the deposition of Kong 2 Member is conducive to the preservation and enrichment of organic matter in the middle of the lake ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50E21B7/04
CPCE21B7/046G06F30/20E21B7/10E21B47/022E21B43/305
Inventor 周立宏肖敦清蒲秀刚刘子藏官全胜范军侠杨朋贾丽唐鹿鹿许静李玲玲姜文亚祝必兴曲宁
Owner PETROCHINA CO LTD
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