Offline Standbuilding System for Land-Based Drill Rigs
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Solution Overview
Problem
Land-based oil drill rigs face inefficiencies in drill pipe standbuilding, as the process is time-consuming and often interrupts drilling operations due to limited drill floor space, whereas offshore rigs can perform offline standbuilding.
Innovation Solution
An offline standbuilding system featuring a hoist, rail system, and mouseholes allows for the construction of drill pipe stands without interrupting drilling operations, using a hoist that can move along a bridge and include a pipe sling to handle multiple pipe sections simultaneously, and an iron roughneck for coupling pipes, enabling the assembly of double and triple stands during drilling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If standbuilding is performed on the drill floor during drilling operations, then the drill pipe stands can be assembled, but the limited drill floor space causes interruptions to drilling operations and increases setup time
Solution Approach 1:
The patent implements offline standbuilding where drill pipe stands are pre-assembled in a separate offline area before drilling operations begin. This preliminary action allows stands to be ready in advance, eliminating the need to assemble them during drilling operations and thus reducing setup time interruptions
Solution Approach 2:
The patent extracts the standbuilding process from the main drilling floor area and relocates it to a separate offline standbuilding area. This separation removes the interfering activity from the critical drilling path, allowing drilling operations to proceed without interruption while standbuilding occurs independently
2Productivity
If offline standbuilding is implemented, then drilling operations can proceed without interruption, but additional equipment and space are required
Solution Approach 1:
The patent designs the offline standbuilding system to use the same types of equipment already present on the drill rig (hoist, rail system, mouseholes, iron roughneck). By making these existing components serve dual purposes - both drilling operations and offline standbuilding - the system avoids adding significant complexity while enabling continuous drilling
Data Source
AI summary
A drill rig having a drill pipe standbuilding system. The standbuilding system may have one or more offline mouseholes, such as two offline mouseholes, a hoist arranged on a rail system, and an iron roughneck. The rail system may be arranged on the mast, such as above a racking board. The hoist may extend from the rail system, through the racking board, and toward a drill floor of the drill rig. The offline mouseholes, rail system, hoist, and iron roughneck may allow drill pipe stands to be built without interrupting or slowing drilling operations. A method of standbuilding may include arranging a first pipe section in a first mousehole, arranging a second pipe section in a second mousehole, coupling a third pipe section to the second pipe section to form a double stand, and coupling the second pipe section to the first pipe section to form a triple stand.