October 2001 ///
Soaring natural gas prices during the past year resulted in a dynamic U.S. rig fleet. The number of rigs in the U.S. rose after two years of declines, and the activity level of this larger fleet was even more impressive than its expanded size. The number of active rigs rose 31%, pushing utilization to 93%, which is an increase of about 19% from a year ago – a level not seen since the early 1980s.
A closed-loop steering system saves money and reduces casing/ drill pipe wear while conducting near-zero vertical drilling through deepwater salt formations
The latest innovation in slant rig drilling technology reduces drilling time for shallow wells by up to 50%, while also improving rig crew safety
In most petroleum companies, each element of the petroleum system is addressed through peer reviews and risking sessions. These elements are: source presence and its characteristics, source maturity, migration (carrier beds), reservoir, trap and seal. An additional risk is oil quality or its preservation. More than half of the risk associated with a prospect or play fairway is assessed via petroleum geochemistry and burial history / thermal / fluid-flow basin modeling.
This article will present how regional data, paleo-reconstructions, seepage data via piston coring and 2-D burial history / thermal / fluid-flow basin modeling have typed source-rock characteristics across the deepwater and ultra-deepwater Gulf of Mexico (GOM), and how this helps constrain source type and presence. Also discussed are new definitions of seepage related to petroleum systems vs. unrelated anomalies, how this helps constrain charge, and how all of these data were integrated to define a source-rock model for the deepwater to ultra-deepwater GOM.
Cooperative effort allows efficient, fast-track development of a gas field – The operator, gas marketer and equipment supplier brought a gas field to full production by using ready-to-ship packages and other equipment from inventory
State oil company Pemex will conduct a large-scale development of gas reserves over the next five years, much of it in the Northern Region’s Burgos basin
Part 2 continues the discussion of a new classification scheme for the world’s giant fields, focusing on the North Sea, Africa, Persian Gulf and FSU regions
In an exclusive interview, Turkmen Oil and Gas Industry Minister Kurbannazar Nazarov assesses the country’s energy sector and prospects for foreign investors
As some operators report production increases, further field tests are warranted for an emerging technology that improves EOR through seismic stimulation
While ignoring unreliable IEA figures, frequent shifts in OPEC quotas still focus too much on API stock changes, often resulting in unintended, wild price swings
World Oil’s annual listing of the 145-unit, global MOPU fleet shows ownership, photographs and performance data for four categories of production vessels
When mere words won’t suffice
Mexican gas stance defies predictability; Cuban oil output leaps higher
Criticism of the new Venezuelan law dismissed as “a storm in a teacup”
New techniques reduce operating costs; Britain recruits offshore help
Getting a “jump” on the latest theory behind seismic anisotropy
Several new projects see first oil; New perforating, gravel pack records set
Offshore Europe examined various ways to optimize remaining UKCS potential
News & Resources
Marathon Petroleum Norge A/S agreed with Statoil, Norsk Hydro and TotalFinaElf to acquire interests in five licenses in the Norwegian sector of the North Sea.
In Brazil’s third bidding round, Phillips Petroleum Co. finalized an agreement on Blocks BM-ES-11 (in the northern portion of the Greater Campos basin) and BM-PAMA-3 (in the Para Maranhao basin, part of the southern Amazon Fan. Phillips will operate the deepwater blocks. Plans call for seismic acquisition and geological and geophysical evaluations.
Table 1. Change in the available fleet
2. 2001 Rig census results
Table 4. Rig utilization by depth capacity
Fig. 1. North Sea region.
Fig. 4. Arabian Peninsula and Persian Gulf
Fig. 5. West Africa region.
Fig. 7. Ural Mountains region.