铝胺钻井液在青东古1井的应用

通过优选抑制剂和封堵剂,确定了铝胺钻井液体系配方,配合相应的现场维护处理工艺,解决了沙河街组地质构造复杂,断层、地应力及层理性泥岩易导致井壁失稳等问题,保证了沙河街组的井壁稳定,使该井提前完钻,提高了钻井时效．该井的钻探成功为深化研究青东区块成藏条件提供了基础资料,有助于该区块进一步的勘探开发．

The Effect of Geometric Correction and False Topographic Perception Correction on Land Use Information Extraction in Hilly Region

Taking the Beiyanziko small watershed on Jiaodong Peninsula as research object, using three methods such as geometric correction, false topographic perception correction and both of them, the land use in- formation was extracted according to DOM and GeoEye data. Taking the land use information extracted from DOM as criteria, the effect of geometric correction and false topographic perception correction on land use in- formation extraction has been analyzed. The results show that geometric correction reduces the accuracy of land use information extraction. False topographic perception correction can improve the accuracy of land area ex- traction, but it can produce the change of the patch edge. So we should select different rnethod to extract land use information according to the actual need, such as choosing false topographic perception correction-vector- ization -geometry correction method when study land use area, and choosing vectorization-geometry correction method when analvze oatch h~undarv ~h~r~,~