Economic Consequences Of Multi-Stage Frracturing

1337 Words 6 Pages
Multi-stage fracturing is an advanced drilling technology that enhances the production capabilities through maximizing the contact area of unconventional wells with the reservoir production zones. During the fracturing process, a special fluid (primarily a mixture of sand and water) is blown out at a high pressure into the shale rock formation creating channels through which hydrocarbons can easily migrate to the well. Multi-stage fracturing is a combination of fracturing and plugging processes. Fractures are made in a reversed order starting form the end of the horizontal hole. Plugs are then placed upon the completion of each stage to prevent communication between the stages.
A Problem with Economic Consequences
A major issue that is encountered
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Coiled tubing unit consists of steel tubing and reel, injector head, control cabin, and power pack. The cost of the trailer, and the entire unit ranges from $1.2 to $ 2.5 million. The breakdown of the coiled tubing unit cost is shown in Table 1. In addition, coiled tubing system includes other equipment such as double pumper, double pumper tractor, nitrogen unit, crane, hoses, pump iron, two wet-kit tractors, and coiled tubing pipe, which bring the total cost of the coil tubing system to $4.5- 5 million for 2-in tubing spread, and $6.5- 7 million for 23/8-in tubing spread. Moreover, Coiled Tubing assembly requires a downhole motor which costs $300- $ 527.28 per day depending on the outer diameter of the motor …show more content…
Similarly, the usage of coiled tubing has resulted in a dramatic increase in the oil production in the Hassi Messaoud field of central Algeria from 860 BOPD to 2280 BOPD.
On the other hand, the cost of hydraulic jet acid fracturing technique depends on the number of fracture stages. Each stage costs $100,000 – $200,000. Generally, the total cost of hydraulic acid jet fracturing is around half of the cost of the well. The maximum cost of hydraulic jet acid fracturing is estimated to be between $ 2- $ 4 million based on the maximum number of fracture stages in U.S. so far which is 120 stages.
The implementation of hydraulic jet acid fracturing technique in western oil field in China has resulted in increasing the oil production reaching a maximum oil producing capacity of 2440

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