The exploration of the the Great Wall drilling for the Liaohe volcanic rock exploration
CNPC news January 19th, reporters learned from the Great Wall drilling, the Great Wall drilling logging company undertake research and logging tasks pre exploratory well QG69 well, volcanic core drilling 3.3 meters, all have oil and gas display.
This well is deployed in Qi Gu 7 in Qijia Qianshan belt, Western Liaohe depression. During deployment, logging technology personnel innovation formed into understanding of volcano rock reservoir, by refining the volcano rock lithology description, accurate seismic synclastic axle tracking, precise division inside characteristics of volcano rock, the igneous rock reservoir cap combination, preferably Qijia Qianshan belt as exploration target research.
The study of Qijia Qianshan tectonic, lithology, sedimentary re determined, for the first time in the Mesozoic in Qianshan were three segments, and layered fine structural interpretation, fine analysis of relationship between oil and water, to tease out the high and low of two in Qianshan, the deployment of 5 wildcat wells, wells QG69 is the implementation of the second wells.
Up to now, the accumulative thickness of the volcanic rock is 30 meters, and the oil layer is interpreted in a comprehensive way by 30 meters. The well has continuously found good oil and gas shows in Mesozoic volcanic rocks, indicating that Qianshan reservoir in Qiqi Mesozoic has good exploration prospect and provides reliable basis for oil exploration in volcanic rocks.
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