Crawler logging technology is a new technology to transport logging equipment to logging areas that are difficult to reach by conventional logging methods to obtain geological data. The company's crawler logging technology has passed the appraisal of the expert group of the group company and reached the leading level in China. Obtained the patent 1 granted by China National Intellectual Property Administration, compiled 2 sets of construction operation specifications, and refreshed the track logging construction records of the group company for 6 times. At present, it still maintains the construction record of the crawler crawling distance of 2 105 meters of the group company.
Jiaoye 62-4HF well is a key horizontal well deployed in Chongqing Fuling shale gas demonstration zone. The well depth is 5 148m, which has the characteristics of long horizontal section, fast deviation building speed and large deviation. When the depth of the well is 3830m, the well deviation reaches the maximum value of 10 1 degree, so logging construction is difficult. To this end, the company decided to use high-power crawler for construction. Before construction, JH-CJ0 10 team made a detailed construction plan and preplan after carefully analyzing the wellbore structure, and organized the construction personnel to carefully inspect the vehicles, equipment and instruments, and debugged the equipment state of the high-power crawler to the best state, thus realizing the "guaranteed bottom" construction.
Upon arrival at the well site, JH-CJ0 10 team members make preparations before construction according to the standardized construction process on the construction site, placing vehicles, pulling warning tape, sending cables and connecting instruments, and strive for perfection in every step. Under the fine operation of technicians, after 18 hours of fighting, the high-power crawler successfully crawled 1.673 meters, got all the cementing quality data and passed the acceptance, successfully completed the well construction task, and set a construction record of crawler logging 1 of the group company.
The success of Jiaoye 62-4HF well indicates that the company's high-power crawler logging technology has the ability to serve the shale gas well in Fuling long horizontal section, which provides strong technical support for the development of unconventional oil and gas resources.