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MARCH 2001 Issue

MARCH 2001

Special Focus

Controlled-pressure drilling system proved offshore UK

K. Schmigel and S. R. Peach
A 5,000-psi system has been developed to address the trend toward using underbalanced drilling to develop virgin or higher-pressured reservoirs
Deepwater drilling with lightweight fluids

D. M. Hannegan and A. T. Bourgoyne, Jr.
Field trials of new equipment for employing UBD techniques on a floating rig have been completed successfully offshore Brazil
How to control surface and bottomhole pressure during UBD

B. Rehm and J. Schubert
Several methods are available for the simultaneous control of surface and bottomhole pressures in gas-charged or foam systems
IADC-UBO panel adopts underbalanced well classification

N. Monjure
To promote safe, efficient underbalanced operations worldwide, an IADC committee has spent two years developing a well classification system

Features

Is scientific visualization a gimmick or a useful tool?

W. Wright, I. Rezmer-Cooper, C. Ramshorn, J. Holt and R. Minton
Compared to previous thinking, many professionals now believe that visualization technologies bring great benefits to well construction
New visualization technologies speed seismic interpretation

J. Angelillo and D. Neff
Companies are using hand-held and projection-type visualization tools to more effectively interrogate and interpret vast amounts of volumetric data
Regional Focus: Canada - Producers post record-shattering year

R. Curran
High prices and strong gas demand prompted Canadian operators to drill a record number of wells, a figure that they are likely to exceed in 2001
Well control during well intervention

A. Sas-Jaworsky II
Part 2 - Practical application of through-tubing well control is discussed for conditions requiring balanced well pressure at the surface
What's new in artificial lift

J. F. Lea, H. W. Winkler and R. E. Snyder
Part 1 - Fifteen new systems are featured in four categories of artificial lift: beam, progressing cavity, hydraulic pumping and gas lift

Columns

Editorial Comment

Thomas R. Wright, Jr., Publisher
A dubious idea to “pay" for ANWR; Energy receives fewer U.S. benefits
International

Kurt S. Abraham, Managing/International Editor
Canadian firms are giddy with excitement about this year's upstream market
International Politics

Stuart Wilkinson, Contributing Editor
Hugo Chávez centers Venezuelan policy on high prices without apology
What's happening in drilling

Robert E. Snyder, Editor
Offshore economics soar; U.S. needs OCS Sale 181; Lasers counter oil blowouts
What's happening in exploration

Perry A. Fischer, Engineering Editor
Worms can point to seafloor gas deposits; Largest GOM oil find confirmed
What's happening in production

Perry A. Fischer, Engineering Editor
Firms thrive on deep Californian gas; Anadarko's subsalt fields are onstream
What's happening offshore

Robert E. Snyder, Editor
Saudi, deepwater GOM shape investment future; White Rose development filed

News & Resources

Companies in the news

March 2001 Vol. 222 No. 3  Company News  Apache closed its acquisition of Canadian properties from Phillips Petroleums Canadian affiliate. Proved res
Industry at a glance
Looking ahead

March 2001 Vol. 222 No. 3  Looking Ahead  Oil firms projected 2001 budgets show increased E&P spending. Oil companies huge profits last year, especial
Oil country hot line

March 2001 Vol. 222 No. 3  Hot Line  Texacos chief makes sudden exit Peter Bijur resigned Feb. 4, 2001, as chairman and CEO of Texaco Inc. His surpr
People in industry

March 2001 Vol. 222 No. 3  People  Texaco President and CEO, Peter Bijur elected to retire and named Senior VP Glen Tilton as his successor. Dale I. T

Departments

Special Report

About the Petroleum Technology Digest

Case studies for Independent Producers
Cementing products and additives

Fifteen pages of tables list available cement additives from seven service companies, their functions and trade names. Products are grouped into 15 functional categories, including basic cements and additives
Gel polymer treatments provide lasting production, economic benefits

Jerry Green, Randy Prater, and Dwayne McCune
Castle Resources Inc. performed gel polymer treatments on four Arbuckle Sand producers in its Vine A lease in the Solomon field in Ellis County, Kansas, during 1995.
Horizontal wells extend the Tulare Sands play in Belridge field, California

Larry Knight, Jim Martin and Janet McAlee
The Hopkins Fee in Belridge field had no production when Nuevo Energy Company purchased its interests in this field in Kern County, California, in 1996.
Petroleum Technology Digest

Special eight-page feature, prepared by World Oil and PTTC, presents four case history reports on recent drilling and production techniques that have been field-tested successfully
Pressure-activated sealant repairs casing leaks

Doug Torr, CamWest and David Rusch
Sustained casing pressure and fluid loss due to casing leaks are ongoing and expensive problems in older oil and gas fields.
Walking beam-operated compressor offers solution for wellhead compression

Using a walking beam-operated gas compressor, operators can increase production and reduce operating costs on rod-pumped wells by drawing gas and gas pressure from the casing to allow additional hydrocarbon flow.

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