江汉湖区浅层大位移井钻井技术

江汉油田地质构造复杂 ,地面水网密集 ,为了进一步探明长湖底部地质储量 ,实现“湖油陆采” ,江汉油田部署第一口浅层大位移多目标探井 -C10X井。该井在实际钻探中 ,首次研究应用浅层大位移井钻井技术采用“PDC +单弯螺杆 +有线随钻”组成的钻具实现了井眼轨迹的连续控制 ,完钻井深2030m ,位移1238.86m ,位移垂深比0.85。C10X井的顺利完钻 ,不但提高了勘探开发的综合经济效益 ,而且进一步证明用有线随钻测斜仪能够钻探位移垂深比大于0.85的大位移定向井 ,同时为今后用有线随钻测斜仪进行大位移定向钻井提供了宝贵的经验和科学依据。

Drilling Technology of Shallow, Long-Reached Well in Jianghan Oilfield

Jianghan Oilfield is covered with lakes and rivers, and its geological structure is complicated. Being the 1st shallow, long-reached well of multi-target in Jianghan Oilfield, Shang 10 well was drilled to further verify the geological reserves beneath Changhu Lake. In practical drilling, BHA of "PDC single bent PDM wireline MWD" was firstly used to achieve continuous controlling of hole trajectory in shallow, big hole and the completed well depth was 2030m, displacement 1238.86m, displacement-to-vertical depth ratio 0.85. Successful completion of this well is very useful for greatly improving composite economic benefits of exploration and development, and proves that wireless MWD can be used to drill long-reached directional well with displacement-to-vertical depth ratio larger than 0.85. It also accumulates precious experiences for future long-reached well drilling with wireless MWD.