COMPACT PERIPHERAL UNIT FOR ONSHORE PRODUCTION RIGS

Abstract

The present invention relates to the optimization of the processes relating to the activities performed by Onshore Production Rigs simplified with the placing of loads on wheels. The use of the equipment on a single board, called a Compact Peripheral Unit (UCP), considerably reduces the quantity of loads moved in the rig dismounting, transport and mounting (DTM) process. As a result, in addition to optimizing the layout on leases, the DTM costs and time are reduced, together with the risk of accidents.

Claims

1. COMPACT PERIPHERAL UNIT, characterized by comprising a hydraulic unit to drive the BOP (1), a compressed air system (2), a tool skid (3), a fluid tank (4), a fluid pump (5), an ESCP test unit (6) and a board (7).

2. COMPACT PERIPHERAL UNIT, according to claim 1, characterized in that the board (7) comprises the installation and road transport of the hydraulic unit to drive the BOP (1), compressed air system (2), tool skid (3), fluid tank (4), fluid pump (5) and ESCP test unit (6), in addition to the electrical system (lighting and motor drive).

3. COMPACT PERIPHERAL UNIT, according to claim 2, characterized in that the centrifugal fluid pump (5) replaces the conventional slurry pump.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The detailed description presented below makes reference to the attached figures and their respective reference numbers, representing the embodiments of the present invention.

[0009] FIG. 1 illustrates a Compact Peripheral Unit for onshore production rigs, consisting of five main pieces of equipment: BOP drive unit, tool skid, fluid tank, fluid pump and WHSE test unit.

[0010] FIG. 2 illustrates the hydraulic unit that drives the BOP and its air compressor (items 1 and 2, respectively).

[0011] FIG. 3 illustrates the tool skid.

[0012] FIG. 4 illustrates the pump and the fluid tank.

[0013] FIG. 5 illustrates the WHSE test unit.

DETAILED DESCRIPTION OF THE INVENTION

[0014] The Compact Peripheral Unit is basically composed of the following components, as shown in FIG. 1: BOP Drive Hydraulic Unit (1), Compressed Air System (2), Tool Skid (3), Fluid Tank (4), Fluid Pump (5), WHSE Test Unit (6) and Board (7): [0015] Hydraulic BOP Drive Unit (1): equipment intended to supply the hydraulic energy needed to drive (open and close) the BOP drawers. [0016] Compressed air system (2): Comprises a radial compressor coupled to a compressed air vessel and pipes. It is responsible for generating, storing and supplying compressed air to drive a hydropneumatic pump of the BOP hydraulic drive unit (1) and WHSE test unit (6). [0017] Tool Skid (3): Intended for storing the operation’s tools/utilities. [0018] Fluid tank (4): is a tank of approximately 60 bbl intended for the storage of fluids to supply the well. [0019] Fluid Pump (5): equipment designed to transfer fluid from the fluid tank to the well. [0020] WHSE test unit (6): Equipment intended for the WHSE tightness test. [0021] Board (7): structure intended for the installation of all the rig peripherals mentioned above, in addition to facilitating their road transport.

[0022] As the own OPRs operate in a simplified way, without fighting the well, it was identified that the only function of the slurry pump is to complete the well. The conventional slurry pump (alternative) was replaced by a centrifugal pump (5) with a flow rate equal to that of the conventional slurry pump (FIG. 7). For some specific operations (column testing, for example) that require pressure, the WHSE test unit (6) will be used.

[0023] The rig fluid is used only to complete the well, the operation team determined that a volume of 60 barrels would be more than enough for the rig operation, so the tank (4) was reduced to that volume.

[0024] The CPU hydraulic unit has not undergone any changes. The unit’s layout was modified in relation to the routing of lines and the position of equipment in order to optimize space and leave the operator’s area free.

[0025] The Compact Peripheral Unit CPU has greater accessibility for operators. With the exception of the BOP Hydraulic Drive Unit (BOPHDU), and Tool Skid (3), all other operations are performed from the ground.

[0026] The ratchets are flatbed trucks with a hydraulic system to pull and receive all equipment and skids. Currently, 10 ratchets (FIG. 6) are used exclusively for the DTM of the 5 rigs and 5 mechanical horses that meet the DTM of the rigs and fluid station. After the CPU’s integration into the five rigs, 8 ratchets can be eliminated, keeping only two for handling rods and tubes boxes. The 5 mechanical horses already handle the movement of trailers and will also be able to handle the CPU’s, without the need to increase the fleet.

[0027] The advantages of the proposed invention is that the number of rachets can be gradually reduced from 10 to 2, as the CPUs are being released for use, with a general cost reduction. Elimination of maintenance with slurry pumps, in addition to the consumption of diesel and lubricating oil; decrease in corrective maintenance on equipment, due to transport with ratchets. The interconnection of the BOP driver, which is in the CPU with the BOP, is made through hoses (a type of hose used to withstand greater pressure). These hoses are positioned at a fixed point in the CPU and before, their wear was greater, due to handling during movement. Thus, there is a reduction in expenses with rig hoses, which are now more frequently changed due to load movements and handling thereof at locations (reduction of 3 hoses per rig). Expectation of faster DTMs.