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drilling operation
Petroleum Engineering, University of Houston, 2. Metarock Laboratories, 3. Department of Earth and Atmospheric Sciences, University of Houston) 16:00-16:30 Break and Walk to Bizzell Museum 16:30-17:30 Tour: History of Science Collections, Bizzell Memorial Library, The University of Oklahoma 17:30-19:00 Networking Reception: Thurman J. White Forum Building
- Research Report > New Finding (0.93)
- Overview (0.68)
- Geology > Geological Subdiscipline > Geomechanics (1.00)
- Geology > Mineral (0.72)
- Geology > Rock Type > Sedimentary Rock > Carbonate Rock (0.68)
- (2 more...)
- Geophysics > Borehole Geophysics (1.00)
- Geophysics > Seismic Surveying > Seismic Modeling > Velocity Modeling (0.93)
LITHOCODIUM MOUND IDENTIFICATION USING LWD IMAGE LOG AND QUANTIFIED CUTTING ANALYSIS VALIDATION WITH ANALOGUES
Perrin, Christian (North Oil Company) | Pointer, Chay (North Oil Company) | Al-Mohannadi, Ghada (North Oil Company) | Sen, Shantanu (North Oil Company) | Buraimoh, Muse Ajadi (QatarEnergy)
Lithocodium mounds are early Cretaceous sedimentary structures described in the literature from outcrops, however, never described in the subsurface. The objective of this work is to identify and characterize Lithocodium mounds in the subsurface along a 25,000ft horizontal well. Drill cuttings sampled at a 100ft interval are observed in thin sections to define and quantify key sedimentary indicators (bioclasts, facies, and texture). Logging-while-drilling (LWD) GR, density, neutron, and resistivity logs are acquired along with the LWD high-resolution borehole image (BHI) log. Bedding dips from BHI data, interpreted along the horizontal well, enabled the reconstruction of the reservoir paleotopography. In particular, the alternation of dip azimuth combined with the facies interpretation from the thin sections supported the interpretation of eight distinct mound structures. An assessment of their overall geometry confirmed the mound shape to be subcircular, consistent with the subcircular geometries observed in Oman at the outcrop. The inferred dimensions of the mounds are comparable with the Aptian Lithocodium mounds in Oman (3040m), and their intermound organization resembles that of the Albian mounds in Texas. This work demonstrates the value of analyzing cuttings to complement image log interpretation and the value of outcrop analogs for interpreting sedimentary structures. For the first time, the subsurface identification and characterization of Lithocodium mounds and intermounds are achieved.
- North America > United States > Texas (0.48)
- Asia > Middle East > Oman (0.45)
- Geology > Rock Type > Sedimentary Rock > Carbonate Rock (1.00)
- Geology > Sedimentary Geology > Depositional Environment (0.93)
- Geology > Geological Subdiscipline > Stratigraphy (0.66)
- Geophysics > Borehole Geophysics (1.00)
- Geophysics > Seismic Surveying > Borehole Seismic Surveying (0.48)
- Well Drilling > Drilling Operations (1.00)
- Well Drilling > Drilling Measurement, Data Acquisition and Automation > Logging while drilling (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization (1.00)
- Reservoir Description and Dynamics > Formation Evaluation & Management > Open hole/cased hole log analysis (1.00)
Do not underestimate the complexity of CO2 injection behavior for full scale projects. Correct installation of the wellhead is crucial for successful drilling operations and long-term equipment reliability into the production phase. Correct installation of the wellhead is crucial for successful drilling operations and long-term equipment reliability into the production phase. Our industry faces new challenges and demands in operating wells with rod pump artificial lift systems. Complex challenges require new solutions.
Automation is penetrating all aspects of the well construction process. Recent technological advances are opening up new automation opportunities in areas such as casing running to deliver an operator's needs safely and consistently. The episode will highlight a rig operating system's vital role in automated casing running and its value to both operators and the service company.
Drilling has made significant progress in all aspects of HSES but the preservation of our license to operate demands that we do better. During this SPE Live, the SPE HSES Technical Director and the SPE Drilling Technical Director address the following question among other interesting talking points: Should we employ more technology, and what can we learn from other industries and other disciplines? What do you see are the areas for collaboration between HSES and the drilling community?
This year is being viewed as a bounce-back period for high-impact oil and gas drilling after a lackluster 2023, with Africa and Latin America pegged to lead the way. Researchers at Rystad Energy have identified 36 potential high-impact wells to be drilled or spud in 2024, the highest annual total since it started tracking the market in 2015. This year's slate would mark a sizable jump from the 27 high-impact wells drilled in 2023. Of the 36 potentially significant wells, 13 are in Africa and 10 in Latin America, accounting for almost 64% of the global total. Explorers will drill six of these in Asia, two each in the Middle East, Europe, and North America, and one in Oceania with TotalEnergies' planned exploration in Papua New Guinea.
- Africa (0.81)
- Oceania (0.59)
- Europe (0.59)
- (3 more...)
It is not unusual that the difficulties encountered during a drilling operation can be tracked down to choices made during the planning stage. However, generating a robust drilling operation plan is not easy as there are often substantial uncertainties associated with the actual geological context. To address this problem, a method is proposed that evaluates quantitatively the risk levels of a drilling operational plan as a function of the underlying uncertainty associated with its description. To achieve that goal, the first task is to describe precisely the sources of uncertainties. The limits by which a drilling operation shall conform may be uncertain therefore defining fuzzy risk boundaries.
Critical drilling issues are usually associated with convergence of pore and fracture pressure, and are intimately connected to the downhole behavior of drilling fluids and uncertainties associated with predicting their behavior during well construction. Top areas of operational concerns, such as lost circulation, hole-cleaning, barite sag, wellbore stability, stuck pipe, etc. all share a common thread in hydraulics, and continue to plague drilling operations and efficiencies. From shallow sections to well completions, the drilling fluid and its imposed pressures represent the primary barrier for well control, and fluid hydraulics affects every stage of well construction. Current measurements provide at best a partial view of downhole pressure windows, and software technologies are necessary to fill in the gaps. A classic example includes optimum speeds for running casing where no downhole measurements currently exist.