Technical Papers

Tech Paper: Pulling Subsea Wellhead Plugs Using a Slickline Downhole Electrical Power Generator Tool

Viable and cost-effective option in Gulf of Mexico deepwater environment A downhole electro-mechanical power-unit tool was used to provide anchored power to pull crown plugs in a single run and in reduced time. This setup has the capability to pull subsea crown plugs that often require greater force than is possible with traditional conveyances without requiring time and resources to reduce hydrostatic pressure....

Tech Paper: Refracturing Design for Underperforming Unconventional Horizontal Reservoirs

Comparison of different Haynesville shale refracturing design treatments, results, and diagnostics This paper discusses refracturing design considerations to increase the estimated ultimate recovery (EUR) on underperforming wells in a refracturing scenario. A method for, and case histories of, using an environmentally acceptable, self-removing particulate diverter that has proven to be successful in the refracturing efforts of horizontal unconventional reservoirs are provided. This method is...

Tech Paper: Next-Generation Modeling for Long-Term Development Planning – Case Study

Modeling used to fully integrate the subsurface models with the surface model of an offshore greenfield In conventional modeling, the flow from the reservoir to the wellbore is decoupled from the flow in the surface pipelines and the facilities. This approach is sufficient during history matching; however, it is less accurate for future performance predictions where precise hydraulic calculation is necessary to assess the...

Tech Paper: Facies Architecture, Channel System and Paleoflow Pattern of a Young Sandstone Reservoir using Borehole Resistivity Images

Integrating resistivity images and openhole logs provides facies architecture to enhance recovery to the optimal production The Miocene age shallow unconsolidated sandstone formation in Kuwait contains viscous oil whose distribution is primarily controlled by depositional facies and their diagenetic modifications. This study integrates core-calibrated resistivity images with openhole logs to obtain high-resolution facies logs with continuous array of oriented depositional structures, facies types,...

Tech Paper: Next Generation Diagnosis and Optimization Workflow for Digital Oilfield

Multidimensional surveillance using real-time and historical data handles thousands of wells more effectively for problem identification and optimization Each year, oil companies experience declining production rates and face challenges in terms of sustaining production targets, diagnosing well problems, and designing solutions to address such production decline. Identifying problems and opportunities at the correct moment, without losing time, is critical to the success of...

Tech Paper: Engineering Approach to Achieve the First Successful Multistage Acid Frac of a Tight Oil Reservoir Producer in Saudi Arabia

Challenges, solutions and post-decision results In Saudi Arabia, conventional oil reservoirs have been treated using conventional stimulation methods. The challenge is that many of the formations now are tighter and require improved stimulation methods. Fracturing is a major topic discussed in the industry as of late and as such using it in this formation will serve as a trial to shift from conventional...

Tech Paper: Rigless Optimization of CT Stimulation in Saudi Arabia’s Offshore Laterals

Well performance improvements up to 200% have been recorded A carbonate field in the northeastern part of Saudi Arabia is undergoing major field development. 75% of the wells are extended reach wells (ERWs) or mega-reach wells. Reservoir pressure maintenance is essential, which is why peripheral water injectors and oil producers (OPs) require matrix stimulation to achieve developmental targets. The field’s offshore portion contains...

Tech Paper: A Small Operator’s Implementation of a Digital Oilfield Initiative

Initiative enables right-time, collaborative, and actionable decision-making work processes Small production operators have to efficiently and safely produce oil and gas despite being faced with many challenges to effectively deliver at the desired metrics (e.g., $/BOE). These challenges include a growing number of wells and facilities, massive increases in big data, legacy systems with associated highly manual processes for diagnosing and analyzing operations, and...

Tech Paper: Optimization of Matrix Acidizing With Fluids Diversion in Real-Time Using Distributed Temperature Sensing and Coiled Tubing

Real-time fiber optic contributed to successfully evaluating the effectiveness of fluids and mechanical diversion Carbonate formations in southern Mexico are commonly stimulated using matrix acidizing treatments to increase well productivity by removing near-wellbore (NWB) damage. Such damage can be attributed to accumulation of paraffin and asphaltene deposits during the productive life of the well and, in other scenarios, to fluid invasion while performing workover activities....

Tech Paper: Successful Implementation of CO2 Energized Acid Fracturing Treatment in Deep, Tight and Sour Carbonate Gas Reservoir in Saudi Arabia

Treatment reduced fresh water consumption and enhanced well performance Up to three thousand barrels of stimulation fluids are pumped during a single vertical fracture treatment in carbonate reservoir of Saudi Arabia with the objective of creating sufficient conductive reservoir contact for commercial production. The post-stimulation production performance in deep, tight, and sour carbonate gas reservoirs often does not meet expectations due to complex...

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