Horizontal and Complex-Trajectory Wells
The decision to construct horizontal or complex-geometry wells is driven by return on investment from technically supported predictions of incremental production or recovery. Variables that can be controlled during the construction phase, which contribute to a well’s performance over its lifetime, can be defined and set as “well-construction key objectives.” The well then can be designed and constructed using the ingenuity of knowledgeable people who are applying technologies and techniques to deliver on these objectives successfully.
However, wells are often constructed under contractual arrangements that conflict with these objectives. A highly beneficial project outcome may not result in commercial success for all parties who contributed. Worse still, it is not uncommon for events that are undesirable and unfavorable to one party to benefit another party inadvertently, often resulting in misalignment. Therefore, to deliver what is important to the project, we rely on a range of integrity-centered human factors such as professionalism, pride in doing a good job, reputation, and relationships.
This misalignment has been ongoing for years; however, there are notable exceptions to standard contractual arrangements. Interest in moving to contracts aligned to rewarding delivery of the desired result is increasing, but we might ask ourselves why the movement is slow. Certainly, designing project-specific “smart” contracts requires more effort, but, if all parties know what they want, the actual process of constructing the contract will benefit the project. Another factor that may explain the slow uptake is that, ideally, multiple parties should be incentivized on delivery of common key objectives across the asset team. This complicates matters because the tendering, evaluating, and awarding of different activities traditionally have different timelines (for example, tendering and selecting; drilling-rig contractor vs. drilling services vs. completions systems).
Therefore, while we have knowledgeable, innovative, professional people with access to great technology, we should remember that the way a contract is constructed helps maintain focus on what really matters when it comes to delivering the best outcome. Well-conceived contracts may also accelerate development of new technologies, to deliver what is not currently achievable. In a nutshell, things tend to align under a well-considered contract.
Horizontal- or complex-geometry-well construction projects are potentially good candidates to work out new contractual arrangements. Authorization to proceed with these projects is technically based, and measurable key variables can be defined. Performance of these wells is often more sensitive to the key variables; therefore, high focus on them by means of novel contractual arrangements should drive greater value.
This Month's Technical Papers
Recommended Additional Reading
IPTC 16813 Advancing Multistage Fracturing Using Horizontal JITP and Autonomous Completion Systems by Tim Benish, ExxonMobil, et al.
SPE 163979 Challenges to Geosteering and Completion Optimization of Horizontal Wells in the Cotton Valley Formation, East Texas by S. Liu, BP America, et al.
SPE 167448 Production Optimization of a Long Horizontal Well Using Permanent Downhole Distributed-Temperature and Pressure Monitoring and Surface-Controlled Zones by Magnus Carlsen, Maersk Oil, et al.
Horizontal and Complex-Trajectory Wells
Jon Ruszka, SPE, Drilling Adviser, Baker Hughes
01 November 2014
Factory-Model Approach Improves Performance of Coiled-Tubing Drillout
This paper presents a factory-model approach to improving CT drillout performance that has been used successfully for more than 3 years and has become standard practice.
Integrated Approach Overcomes Depleted-Reservoir Challenges
This paper describes challenges faced in a company’s first deepwater asset in Malaysia and the methods used to overcome these issues in the planning stage.
Multilateral and Complex-Trajectory Wells
The oil industry is currently undergoing a technological transformation that will add value, improve processes, and reduce cost. Future drilling engineers will have knowledge of robotics, automation, and organizational efficiency, which is highly appealing for recruitment.
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09 July 2019