The first horizontal shale oil well in minfengwa depression in Shengli Oilfield successfully completed the first stage of fracturing

On January 14, the first section of fracturing was completed in the Fengsha 1-1HF well of the shale oil horizontal well, which opened the prelude to the development of shale oil in the Minfeng depression.

Fengfeng 1-1HF well is the first shale oil horizontal well deployed in the Minfengwa Depression of Dongxin Oilfield, the target layer is the Shasichun Upper 3-layer Formation, its main purpose is to explore the shale oil production capacity of different rock facies and different degrees of thermal evolution in the Minfengwa Depression, the horizontal section of the well is 2042 meters long, the design is divided into 33 sections of fracturing construction, the displacement is 20 cubic meters / min, is the longest design level of Shengli Oilfield, the largest sanding scale of shale oil horizontal well.

According to the specific conditions of drilling and reservoir development of the well, the technical personnel of the Fracturing Institute of the Chinese Academy of Engineering have consolidated the analysis of basic data such as logging and logging, strengthened the pressure evaluation of reservoir compressiveness such as rock mechanical analysis and geostress calculation, carried out dessert classification and sorting, process differentiation design, parameter targeted adjustment, carried out effect evaluation experiments of different sizes and different processes of the same type of reservoir, responded to the complexity of the reservoir with the individualization of technology, and fully promoted the utilization of shale oil reserves to a new level. At the same time, it also provides an important reference for the subsequent fracturing process design of Fengba 1-2HF well and Fengsha 1-3HF well and the development and deployment of shale oil in the entire Minfengwa Depression.

(Author: Ren Houyi, Zhao Li, Editor:Yu Qinghua Review:Wang Ying Producer:Li Yan)