The Origins of Abnormal Fluid Pressures

Norman E. Smith, H. George Thomas

Houston Geological Society

... result if changes in fluid pressure result from fluid density contrast or recharge, or if the expulsion of fluid from compacting rocks is inhibited...

Small Eocene Wilcox Foraminifera from the Subsurface Texas Gulf Coast, Houston, Texas

F. Marion Setzer

GCAGS Transactions

... of the sediments is discussed. The drilling difficulties inherent in long sections of light density, and under compacted shales, interbedded with very...

SHALLOW GAS RISK OR RESOURCE?

Francis Buckley

GEO ExPro Magazine

... potentially alter the nation’s economic trajectory.” Even though an exact number was not reported this time, and the wording seems a bit more carefully...

Role of Geopressure in the Hydrocarbon and Water System

Paul H. Jones

AAPG Special Volumes

... discharge water and gas into the hole as they are penetrated by the drill bit; and by decrease in the density of shale drill-cuttings on the shaker. It can...

The Pressure Beneath

PESA Staff

Petroleum Exploration Society of Australia (PESA)

... the bit", he sa id. li ke oil and ga s generatio n; particularly gas computer prog rams, to t ry and work out what generation, because gas wants...

Coring Shale Gas Formations with Wireline Coring Technology in a Complex Geological Structure in the Medium Magdalena Valley: A Case History from Colombia, #41067 (2012)

S. Rodriguez, E. Tovar, L. Valderrama, C. Vivas, M. Gray, V. Daza, L. Delmar, C. Gomez

Search and Discovery.com

... problems while coring. • Low solid content to reduce the bit balling tendency from the coring bit. • Proper fluid density control and pressures while...

Constraints on Natural Fracture and In-situ Stress Trends of Unconventional Reservoirs in the Permian Basin, USA

David Forand, Vincent Heesakkers, Kenneth Schwartz

Unconventional Resources Technology Conference (URTEC)

... of fracture character, such as orientation, density, and aperture, is not well constrained. In typical naturally fractured reservoirs, fractures...

Coalbed Methane Applications of Wireline Logs: Chapter 13

Patrick L. Scholes, Dave Johnston

AAPG Special Volumes

..., A., 1977, Correlation of high resolution density log counts and ash content of coal: Australian Society of Exploration Geophysicists Bulletin, v. 8...

Liquids-Rich Resource Play Characterization Using Well Log Analysis Calibrated with Rock Properties from Drill Cuttings

E.T. Vosburgh, O.A. Djordjevic, J.A. Rushing

Unconventional Resources Technology Conference (URTEC)

... directly from rock samples. For example, calculating porosity from logs in shale oil systems is difficult due to the presence of low-density organic...

Quality Improvement in Primary Cementing

Timothy A. Nagy

Indonesian Petroleum Association

.... These are devices run above the bit to insure that the hole stays straight and to the O.D. of the bit. These straighter, "in gauge," holes also...

Successful Sub-ERD Sidetrack Well in Offshore

Ana Sri Redjeki, Bramarandhito Sayogyo, Dhanie-Anugrah Dewanta

Indonesian Petroleum Association

... brittle coal layers and loosen sands, formed in inter-bedded layers. Since the company has relied on the Point-the-bit rotary steerable systems (RSS...

Geosteering Drilling Technology of Ultra-long Horizontal well in Chang 7 Unconventional Reservoir of Qingcheng Oilfield

Wubin Gao, Bo Wang, Bo Chen, Liangbing Cheng, Zhangbin Feng

Unconventional Resources Technology Conference (URTEC)

...) seismic data to obtain elastic wave impedance, P-and S-wave impedance, density, Poisson's ratio and other parameters related to lithology and fluid bearing...

Current Queensland Drilling & Completion Practices

S. S. Derrington

Petroleum Exploration Society of Australia (PESA)

..., the log suite run comprises dual laterolog-micro spherically focussed log - caliper, sonic-gamma ray and as required a formation density log. A velocity...

Collaborative Development of a Production Casing Connection for Well Design in the Permian Basin

Lee Pereira, Adonis Ichim, Kyle McCarthy, David Mutis

Unconventional Resources Technology Conference (URTEC)

... the effect of the new connections outer diameter on cement placement and equivalent circulating density. The paper presents a detailed discussion...

A Novel Casing in Casing Refracturing Treatment for a Bullheading Re-fractured Well in Fuling Shale Gas Field - A Case Study

Zhiyong Lu, Jincai Shen, Chi Zhang, Yue Ming, Rong Han, Bin Wang

Unconventional Resources Technology Conference (URTEC)

...: Drill bit: 26” TD：56.79m Surface section: Drill Bit：17-1/2” TD：808m Intermediate section: Drill bit:12-1/4” TD: 2316m Production section: Drill bit...

Identifying Cumulative TVD Error in Horizontal Wells Drilled with Rotary Steerable Systems

Joel Dunn

Unconventional Resources Technology Conference (URTEC)

... between steerable motors and rotary steerable systems, and even between different RSS technologies, they all produce a side force bias on the bit...

Advances in Borehole Imaging in Unconventional Reservoirs

Marian Morys, Sergei Knizhnik, Andrew R. Duncan, Brady E. Tingey

Unconventional Resources Technology Conference (URTEC)

... and directional sensors for azimuth and high side offset detection. Compact size allows placement close to the bit and reduces overall BHA length. The paper...

Well Data Projection into Undrilled Exploration Areas Using Gravimetric and/or Seismic Isochron Steering Functions

Richard H. Fillon, Rosanne J. Jowitt and Ronald L. Phair

GCAGS Transactions

... be valuable tools for exploration, yet their full potential for predicting reservoir quality ahead of the drill bit is limited by the location, quality...

6.0 Comments on Previous Chapters

P. E. Gretener

AAPG Special Volumes

... for Structural Geology (Revised) Anderson, D. M. and Low, P. F., 1958, The Density of Water Adsorbed by Lithium-, Sodium-, and Potassium Bentonite; Proc. Soil Sci...

3-D Geomechanical Modeling for Field Development of a Colombian Shale Play

Leonardo Arias Medina, Azra N. Tutuncu

Unconventional Resources Technology Conference (URTEC)

... migration was conducted to deliver a 3D volume of P-wave impedance and Swave impedance and bulk density to have lateral and vertical spatial coverage...

Abstract: Differentiation of Shale Types by Allochthonous and Autochthonous Nannofossils, by W. W. Cooper; #90978 (1975).

Search and Discovery.com

The Impact of Induced Fracture Surface Area on Production in the Avalon Shale when Thermal Maturity is Marginal

Doug Walser

West Texas Geological Society

... commodity price differential between liquid and gaseous hydrocarbons has stimulated quite a bit of activity in the Avalon Shale and upper Bone Spring members...

Seismic Exploration on Barrow Island

P. A. Jelley, M. J. Sayers

Petroleum Exploration Society of Australia (PESA)

... not of sufficient quality to allow confident mapping of the exploration objectives on Barrow Island. In 1987, a 1024 channel, "sign-bit"Vibroseis crew...

An Interesting Example of a Survey of a Deep Bore Hole

F. S. Hudson, N. L. Taliaferro

AAPG Bulletin

... be little doubt that the brown marl represents the youngest member of the Monterey series at this locality. At 1,787 feet the bit entered dense, fine...

Kiffen Nacimiento (Gas), T. 32 N., R. 11 W., NMPM, San Juan County, New Mexico

Elliott A. Riggs

Four Corners Geological Society

... to the surface. A string of 4 ″ casing was run in a 6 ″ hole to 710 feet and cemented. A bit and a bit sub were run on 2 ″ tubing to drill out...