Well Construction Method Condensing Drilling and Completion Phases
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Solution Overview
Problem
Current methods for constructing oil wells using the slender design require multiple phases and maneuvers, which are time-consuming and resource-intensive, with no prior art combining phases 3 and 4 or performing upper and lower completion in a single maneuver.
Innovation Solution
The method condenses phases 3 and 4 into a single drilling step and combines lower and upper completion stages into a single maneuver, using different drill diameters and fluids to achieve geonavigation and sand control, allowing for efficient well construction with reduced drilling phases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the traditional four-phase drilling process is used, then each phase can be drilled with appropriate drill sizes and fluids, but the process becomes time-consuming and resource-intensive
Solution Approach 1:
The patent combines phases 3 and 4 into a single drilling operation, and merges upper and lower completion stages into one maneuver. This reduces the total number of separate operations from four drilling phases plus two completion stages to a streamlined process with fewer intervention points, directly addressing the time and resource consumption issue while maintaining the functional separation needed for different drilling requirements
2Reliability
If multiple separate completion maneuvers are performed, then proper installation of screens, gravel packs, and production strings can be achieved, but the number of maneuvers increases operational complexity and time
Solution Approach 1:
The patent performs both upper and lower completion operations in a single maneuver by carefully sequencing the installation of screens, gravel packs, and production strings during one continuous operation. This reduces the number of separate maneuvers while maintaining the functional separation and installation quality requirements through proper planning and execution of the combined operation
3Measurement precision
If phases 3 and 4 are drilled separately, then landing and geonavigation can be optimized, but the overall process efficiency decreases
Solution Approach 1:
The patent integrates phases 3 and 4 into a single drilling operation where landing and geonavigation are performed continuously without interruption. This maintains the precision required for accurate well placement and navigation while improving overall drilling efficiency by eliminating the downtime and operational complexity associated with separate drilling phases
Data Source
AI summary
There is provided a method for well construction comprising the steps of: a first phase of the well construction, in which a bottom hole assembly, BHA, with a first drill is used for drilling, and a conductor casing is lowered into the well and cemented; a second phase of the well construction, in which a second drill is used for drilling, wherein a production adapter base, PAB, is installed in parallel with lowering a blowout preventer, BOP; and a third phase of the well construction in which a third drill is used for drilling, for the steps of landing and geonavigation inside a reservoir.