Improvement Research That Explore Well Drilling Technology Hailaer Of Daqing

With the collation water content ascend year by year in high permerbility of the internal Changyuan Daqing Oilfeild in the"ten five years", stable yields become more difficult. So one of importmant working is in Hialaer,But the explore district of Hailaer is a new developed area,underground condition is very complex,for the new area the ways of drilling is juvenility,The main appearance of difficulty is based on the slow drilling speed, low efficiency of explore drilling, which is caused by increasing drilling accidents and complex situations. Through the practice of explore drilling with many years, we can finish a explore well in better quality and increase the technology of explore drilling if drilling speed increases and we take precaution against the engineering accidents.The exploreing oil-gas of Hailaer basin begin in 1982,is the important of Daqing oilfield exploring,By many years explored had gained great success.At present at basin have found 16 sunken and 9 industry oil section,proved up oil resource reserves is 6.5 hundred million tons,natural gas resource reserves is excess 2700 hundred million steres,foreground is very well.By the request of CNPC,Hailaer oilfield will be built million tons produce,need drilling supply the technical help,increase the explore.The thesis is aimed at the difficulty of drilling in Hailaer, field tests 23 wells totally,in 23 wells have analysed for the pressure section,well wall stabilization,string invalidation,choose type for the bit,guid drilling,side drilling prevent inclined,coring etc test and spread. Then these technologies are popularized and become the application of comprehensive and assorted technology finally. The average deep is 2532m, the drilling rate is 5.88m/h, the one well drilling circle 36.8d, the recovery of coring 99.5%, wellbore quality rate 100%, the cement quality 100%, one well drill string failure 0.17, and no collapse happen. On the well deep increase 302m, drilling rate raised 15.29%, drilling circle shortened 14d, and recovery of coring lift 2.38 percent.This item research have many initiating work.for instance:built three pressure profile;built the model of drilling string fatigue life forecast;the research drilling mud system of no filter and no infract;the liquid thrust test,all those have achieved lead level in the inner country.