Simplified Casing Program for Development Wells in Mahu Well Block
In the Mahu well block of Junggar basin,the complex formation has many sets of pressure system.Especially,the formation with microcracks in the middle layer is loose and the pressure bearing capacity is low.Lost circulation is prone to occur in this layer.At present,high investment and long drilling period were the main problems in the exploration and development process.The geostress 3D model of Mahu well block was established by means of logging and drilling data.The model provided the three-pressure profiles of Mahu well block for casing program optimization and safety drilling.Each well could be optimized the intermediate casing setting position.The intermediate casing was saved 160 meters long.The total of drilling speed was improved 5 times compared with the past drilling process.Slim hole drilling technology raised ROP 51.96%higher,and the average drilling period is shorten to 24.83 days.
Zongyu Lu Weifeng Chen Sihao Li Yingjin Zhang
Engineering and Technology Research Institute of Xinjiang Oil Field Co,Karamay 834000,China National Engineering Laboratory of Petroleum Drilling Technology,Leak Resistance & Sealing Technolog
国际会议
珠海
英文
1-4
2017-09-23（万方平台首次上网日期，不代表论文的发表时间）