Shallow And Middle-Upper Gas Layer Logging Delicate Interpretaton Of Taoyuan And Dapingfang Areas Of Liaohe Oil Field

With the development of exploration and exploitation in Liaohe Oil Field, logging data's interpretation is becoming more and more important for shallow middle and upper oil and gas bearing reservior, especially shallow gas layer's exploitation and utilization. In east area, gas of shallow layer is dominant, which is distribute mainly at the east of Taoyuan,Dapingfang,Rongxingtun,Jing35 of Shenbei. In west area, heavy oils dominant. In Liaohe Oil Field, the distribution of shallow gas layers is very extensive, but geological conditions such as reservior sendiment and development are complicated (particularly for shallow oil and gas layers, logging and geology datas which can be refered are very limited). The interpretation method for middle-lower layers and local areas can't be used in shallow layers (well depth not more than 1600m ). So this paper mainly researchs on interpretation method of shallow gas layers for Taoyuan,Dapingfang,Rongxingtun and Jing35. It's very important for the Oil Field.March 2001, the topic was established, under the support of some experts of the company and interpretation center, I paid close attention to the study and expected destination was achieved. Shallow gas layers logging interpretation method has been established, corresponding software has been programmed. My research has some features.1) Based on logging datas of part of shallow layers, integrated with datas of geology, and exploitation, after analysing response features on curves of shallow gas layers, qualitative interpretation chart was established for Jing35,Shen67 and Qinglongtai.2) In Jing35,Shen67 areas, shallow layer gas-was reexamined and interpreted, For Jing35, The results of 25 wells modified, the thickness of gas layer increased by 222.3m ,15 wells were modified in Qinglongtai Field, increased by 79.2m.3) On the base of the qualitative interpretation chart, quantitative interpretation method was researched, corresponding processing program was designed.4) Utilizing processing program, modifying interpretation parameters processing shallow layer datas of Taoyuan and Dapingfang areas. The result is very good.5)Integrated logging datas with geology and exploitation datas, through researching logging response of shallow gas layers, interpretation chart and method were established, which are practical and reliable.At last, I must give my thanks to professor Tang Dazhen for his instruction. Thanks to many leaders and comrades who had given me help during the research.