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Mod.rn Shale Gas Horizontal d.illing： Review of Best Practices for Exploration Phase Planning and.Execution

中国石油勘探 2009年第3期14卷 41-50页

作者： nathaniel harding stephen smith john shelton mike d. burnaman harding shelton Group Oklahoma City Oklahoma 73102

The challenging characteristics of shale formations often require horizontal d.illing to economically d.velop their potential. While every shale gas play is unique, there are several best practices for the proper planning and.execution of a horizontal well. In planning a horizontal well, the optimal method.and.technology for build.ng inclination and.extend.ng the lateral section must be d.termined. Properly specified.logging-while-d.illing tools are essential to keep the wellbore within the target formation. Planning must also focus on casing d.sign. d.ing so will help ensure stability and.enable reliable and.prod.ctive completions. Shales pose a challenge for these elements of well planning d.e to their thin strata and.potentially low mechanical competence when foreign fluid. are introd.ced. Once a plan is d.veloped. executing it is even more important to prove a viable exploration program. Fast, efficient d.illing with wellbore control and.minimal torque and.d.ag should.be the priority. This may be achieved.by focusing on fluid.hyd.aulics and.rheology and.bottom hole assembly. Managed.pressure d.illing (MPd. will help fast d.illing, well control and.stability. If MPd.can be combined.with new generation rotary steerable systems that allow the d.ill string to maintain rotation, impressive efficiencies are possible. Mod.rn d.illing parameter analysis represents the newest opportunity for executing shale gas horizontal wells. A method.for ROP analysis to improve operational parameters and.equipment selection is also proposed.

关键词：页岩天然气石油地质勘探

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Significance of Shale Gas d.velopment

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中国石油勘探 2009年第3期14卷 29-33页

作者： john shelton mike d. burnaman Wenwu Xia nathaniel harding harding shelton Group Oklahoma City Oklahoma 73102

Natural gas prod.ction from shale formations is growing exponentially in the United.States. This paper introd.ces the five major shale formations in the United.States and.the technologies used.to prod.ce them. The Barnett, Haynesville, Fayetteville, Wood.ord. and.Marcellus combined.hold.an estimated.978 trillion cubic feet of total gas reserves. These find.ngs along with recent technological ad.ances in horizontal d.illing and.completion method. have transformed.the natural gas exploration and.prod.ction ind.stry in the U.S. and.have fund.mentally changed.the U.S. energy picture. Specifically this paper states that the United.States through the utilization of natural gas from shale can red.ce its carbon emissions and.can become more energy self-sufficient. Finally, the harding & shelton Group states in this paper that the opportunity to locate and.prod.ce shale gas in China is very similar to that which has taken place in the United.States.

关键词：页岩石油天然气地质勘探

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Geochemistry and.Geologic Analysis in Shale Gas Play

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中国石油勘探 2009年第3期14卷 34-40页

作者： Wenwu Xia mike d. burnaman john shelton harding shelton Group Oklahoma City Oklahoma 73102

The und.rstand.ng from the conventional geochemistry and.geology analysis is very d.fferent when trying to apply them to shale gas plays. This paper is a summary for U.S. shale gas plays on geochemistry and.geologic analysis application, and.real field.d.ta from active U.S. shale gas plays is used.in the d.scussion of d.fferent concepts.

关键词：天然气地质勘探地球化学石油

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