March 2009 ///

Special Focus

Casing drilling eliminates lost returns

The technique overcomes a depleted coal formation in the San Juan Basin.

Casing drilling optimizes pre-drill program’s drilling efficiency

Drilling in multiple surface casing strings at Peng Lai Field saved time and money.


Modeling and inversion of cross-dipole full waveforms for azimuthal anisotropy

Lack of quality control techniques for cross-dipole sonic inversion meant that improvement was needed to advance the state-of-the-art for this application. 

Optimization of CT interventions in extended reach wells

 In water injection wells in Saudi Arabia, techniques used to extend the reach of coiled tubing stimulations included use of nitrified fluids and viscoelastic surfactant friction reducer, as well as optimizing the pull-test frequency in open hole.

Issues with compensated neutron log response

Always remember the basics with log responses. This tutorial reminds us that, despite evolutionary improvements, log responses are often misunderstood.

Kick handling with losses in an HPHT environment

In HPHT or deepwater operations, differences in shale and sand fracture gradients can result in kicks with simultaneous gains and losses. Options for handling these scenarios are available, but must be applied in a logical sequence.

Recent advances in well logging and formation evaluation

Developments include improvements in wireline depth accuracy; new methods for tool deployment; casing evaluation tools; LWD batteries and telemetry systems; azimuthal-density imaging; and digital-outcrop modeling.

Cross-linked polymer-based mud pill applied in MPD operations

A fluid pressure transmission pill met several drilling challenges in an HPHT environment, including successfully balancing reservoir pressure.


Editorial comment


Exploration discoveries

Exploration discoveries

Oil and Gas in the Capitals

Turning crisis into opportunity in Brazil

What’s new in exploration

Haynesville sizzle could fizzle

Another good year for new deepwater fields

The exploration industry looks to have had an excellent year for new field discoveries in 2008. This success owes much to drilling in 400 m of water or more.

What’s new in production

Massive Shtokman steams ahead against economic cross-currents

Drilling advances

Heroes of the oil patch

What’s new in exploration (1)

Independents Discover Oil in Uganda

News & Resources

Industry at a glance

At the beginning of 2009, the steep decline of US workover and rotary rigs continued. The US workover rig count fell to 2,152, down 13% from 2,476 in January 2008. Rotary rigs running in the US fell to 1,553, down 11% from 1,749 in January 2008. However, despite the falloff in US rigs, the international rotary rig count has remained relatively stable at 1,515 in January 2009, down only 7% from 1,640 in January 2008.

Meetings and Events

Meetings and Events

New products

New Products

People in industry

People in the Industry

World of Oil

Chavez wins referendum; US oil and gas leases canceled and pulled from sale; Iran signs new Turkmen gas deal; Italy suspends Total Italia’s Gorgoglione project