收稿日期: 2004-07-19
修回日期: 2004-10-09
网络出版日期: 2004-12-20
基金资助
油气藏地质和开发工程国家重点实验室基金项目(编号:PLN0133)资助.
STUDY ON STATISTICAL MODEL OF PREDICTING FORMATION FRACTURE PRESSURE USING LOGGING DATA
Received date: 2004-07-19
Revised date: 2004-10-09
Online published: 2004-12-20
聂采军,赵军,夏宏权, 刘之的 . 地层破裂压力测井预测的统计模式研究[J]. 天然气地球科学, 2004 , 15(6) : 633 -636 . DOI: 10.11764/j.issn.1672-1926.2004.06.633
At present, a lot of the theoretical models or equations of calculating formation fracture pressure are presented and used, but there are few statistical models that can obviously reflect the formation fracture pressure and the logging rock mechanics parameter variety. In this paper, based the relation of formation fracture pressure and rock mechanics parameter, the four parameters which have a close connection to formation fracture pressure and are regarded as independent variable (input parameter), such as Young's modulus, bulk modulus, poison's ratio and depth etc. are selected. And by the BP neural network and multi-regress analysis technique, some reasonable statistical models of formation fracture pressure are established by making full use of formation fracture pressure data of carbonate formation, and the prediction study is developed. All research shows, the form of multi-regress analysis is simple and visual, and easy to use, but the error is not lesser. The BP neural network model is complex, and it's model is difficult to set up, but the estimate's formation fracture the pressure error is little, the precision is high. The two kinds of statistical model are still practical and feasible approaches to calculate formation fracture pressure.
[1]黄贺雄.对国内外几种预测地层破裂压力模型的认识[J].国外测井技术,1993,8(3):11-14.
[2] 冯启宁.用测井资料预测计算地层破裂压力的公式和方法[J].华东石油学院学报,1983,3(1):22-30.
[3] 谭廷栋.从测井信息中提取地层破裂压力[J].地球物理测井,1990,14(6):371-377.
[4] Tang X M.Identifying and Estimating Formation Stress from Borehole Monopole and Cross-Dipole Acoustic Measurement[C]. SPWLA 40th,1999.
[5] 夏宏泉.三维地质数据的神经网络处理及立体图形显示[J].天然气工业,1997,17(4):26-30.
[6] 姜子昂.川南东部地区阳新统的地层破裂压力预测[J].天然气工业,1994,14(2):44-47.
/
〈 |
|
〉 |