Study on forward and inversion modeling of array laterolog logging in a horizontal/highly deviated well

• Autorzy: Zhu Peng , Li Zhiqiang , Chen Ming , Dong Yixin

Identyfikatory

DOI

10.1007/s11600-019-00321-2

• Języki publikacji: EN

Abstrakty

EN

Electric feld synthesis was carried out using the multi-feld superposition method according to the working principle of the array laterolog electrode system. The feld distribution of each subfeld was simulated with the 3D finite element method, and the laterolog response of the array was obtained using the linear superposition principle of electric feld. The detection depth and thin layer response at diferent angles of the array laterolog were analyzed. The forward response calculation shows that the radial detection depth of the array laterolog is smaller than the deep laterolog detection depth. When the inclination angle of the well is less than 15°, the logging response of the array laterolog is less afected by the well inclination, and the well inclination correction need not be performed. The logging response values of highly deviated wells with inclination angles exceeding 60° and horizontal wells are quite diferent from those of vertical wells; thus, well deviation correction must be performed. To improve the stability of array laterolog logging inversion using the accurate forward response, a Newton–singular value decomposition method based on particle swarm optimization is proposed to realize inversion of array laterolog logging, and the stability and reliability of logging inversion are greatly improved. Thus, application of the theoretical model and actual data processing and analysis show that the proposed method can efectively and accurately eliminate the infuence of a complex logging environment and obtain real formation parameters.

Słowa kluczowe

EN

particle swarm; finite element method; inversion; array laterolog; Newton–SVD method

PL

rój cząstek; metoda elementów skończonych; odwrócenie

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2019
• Tom: Vol. 67, no. 5
• Strony: 1307--1318
• Opis fizyczny: Bibliogr. 28 poz.

Twórcy

autor

Zhu Peng

• College of Energy Resources, Chengdu University of Technology, Chengdu 610059, People’s Republic of China

autor

Li Zhiqiang

• China Radio Wave Research Institute, Xinxiang 453003, Henan, People’s Republic of China

autor

Chen Ming

• CNOOC (China) Co., Ltd. Zhanjiang Branch, Zhanjiang 524000, Guangdong, People’s Republic of China

autor

Dong Yixin

• Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, People’s Republic of China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).