North German operator uses learning curve to improve horizontal drilling techniques

Journal Article · Mon Dec 01 04:00:00 EST 1997 · Oil and Gas Journal

OSTI ID:549444

Schamp, J ^[1]

---

1. Mobil International Drilling Services, Dallas, TX (United States)

The success of Mobil Erdgas-Erdoel GmbH`s (MEEG) first horizontal well, the Siedenburg Z17, has promoted the widespread use of short, ultra-short, and medium-radius drilling technologies in North Germany. This well, drilled in 1990, initiated production at a rate of 17,000 normal cu m/hr (14.5 MMscfd), a six-fold increase compared to a vertical offset. Since then, MEEG has drilled more than 20 horizontal wells in North Germany. True vertical depths (TVDs) for these wells range from 270 to 4,940 m, with build rates of 92{degree}/30 m for ultra-short radius to 3--5{degree}/30 m for long-radius wells. The paper describes short-radius drilling technology, the Hamburg gas storage project, a hydraulic mining rig, the dual-lateral Siedenburg Z6, medium-radius wells, deep drilling equipment requirements, drill-in fluids, new fishing tool, multifrac well, borehole-stability analysis, and future projects.

• OSTI ID: 549444
• Journal Information: Oil and Gas Journal, Journal Name: Oil and Gas Journal Journal Issue: 48 Vol. 95; ISSN OIGJAV; ISSN 0030-1388
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
DIRECTIONAL DRILLING
DRILLING EQUIPMENT
DRILLING FLUIDS
FEDERAL REPUBLIC OF GERMANY
NATURAL GAS WELLS
OIL WELLS
WELL DRILLING