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Sinopec News Network reported recently that well Yan 12xie-3 in Jianghan Oil Region completed drilling, interpreting 14.
2 meters/3 layers in the target zone, and fracturing and commissioning 7.
5 tons of oil per day
.
The well was successfully drilled, and the Yanxian 12 trap was further evaluated, opening a new prospect for the development of the Banghu East Slope reservoir
During the deposition of the Qianjiang Formation, the slopes around Banghu developed multiple stages and branches from Jingmen, which originated from the underwater distributary channel from northwest to southeast.
The southeastern margin of the Banghu syncline was the main transition zone between clastic rock and evaporite lithofacies.
In the transition zone, dry sand + mudstone belts of different depositional stages have developed, which is a potential area for searching for multiple types of lithologic oil reservoirs
.
At the beginning of 2020, in order to concentrate efforts on high-quality resources and promote the breakthrough of rolling exploration in Qianjiang Formation, the oilfield established the Benghu Syncline Peripheral Rolling Exploration Joint Research Team.
Jianghan Oil Production Plant, the Research Institute of Exploration and Development and the Institute of Geophysical Prospecting “jointly joined forces” , Strengthen high-quality rolling exploration and reservoir evaluation, and truly realize integrated joint research
.
After more than a year of in-depth cooperation, the research team based on oil and gas enrichment zones such as the Banghu syncline, Zhongtan fault zone, and Haokou complex structural belt, strengthened research on complex structural belts, and implemented a number of lithological trap groups
Yanxie 12 well area is the key production and construction area of Jianghan Oil Production Plant in 2021
.
This area is located on the east slope of the Banghu syncline, and the reservoir type is an updip pin-out lithologic reservoir
Around the Haokou complex structural zone, geotechnical personnel once again carried out technical exchanges and discussions on the proposed trap well location of Haoxian 451, further understanding of the structure, and optimizing the target to ensure that the well meets the target layer
.
In view of the complex and fractured structure of the Tankou Uplift Zone, technicians used seismic data as the basis and drilling as the basis to strengthen the "well-seismic combination, line-surface combination", and finely portray the local structure distribution pattern to lay a goal for the demonstration.
The rolling well Dai 14 Incline 16 Well deployed in the west of Daihe Oilfield encountered an oil layer of 6.
0 meters/6 in the target layer.
The initial daily oil production was 5.
2 tons, the actual reserves were 411,000 tons, and the target layer was buried at a depth of 831 meters.
One discovery broke the traditional understanding that the shallow layers of the Qianjiang Formation are heavy oil
.
(Reporter Lei Li, correspondent Guo Beilei)
