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Oil shale deep inclined technologies and new development

In recent years,the shale gas exploitation push US to achieve energy independence, but that does not mean there is no challenge to the development of shale gas. Drilling and completion of horizontal wells cost factors continue to drive industry experts and engineers seek more economical way exploit these unconventional hydrocarbon reservoirs.

Newdrilling technology allows drilling speed, due to hydraulic fracturing technology is one of the key factors driving the cost of production of shale oil, so the well site, the spring and the bulk of drilling and fracturing technology is becoming increasingly popular in the shale mining.

It is reported thatthe largest shale oil production comes from the electric submersible pump group (ESP). However, most drilling is through the use of a reciprocating rod upgrade (RRL) or rod pump (SRP) to complete the construction job: engineer faces optimize production and extend well life challenges on the basis of regular front-end engineering studies to predict the performance of the life of the well. Situ modeling and comprehensive understanding of the effects of different crop-completions and artificial lift methods, can significantly reduce the total cost of production wells mouthful, and increase production in order to make positive correlation producers ultimately profitable investment.

With therapid development and use of the drilling industry frac sand in hydraulic fracturing in shale oil production is now faced with many new challenges. Despite the fracturing process also need to inject sand, but many forms of artificial lift is not designed to handle solids since wellbore production methods. In the heavy oil production in Canada, Venezuela, Colombia and California, the PCP (PCP) is the most commonly used artificial lift way. This is a fundamentally based on a spiral design with a rotor and a stator, and its main purpose is the production of solids and high viscosity oil. Producers are trying different ways to achieve artificial lift optimization of production purposes.

Currently,due to the oil and gas industry more effective exploitation of shale oil, shale oil has so deeply inclined to form a side-loading case, which is mainly reflected in the vertical section and the horizontal portion of the well, and sometimes kick after flowback related frac sand clogging. Because inclination sake, the average drilling industry MTBF (MTBF) is increasing. In deep inclined, one common problem is a side-loading case, rod and tubing wear experienced side loads than 150psi, will result in the tubing string broken rod or hole early failure.

Due to theinfluence of the best construction practices, mechanical failure is reduced, but there is still clogged with sand fracturing combining side-loading case. Therefore, most producers are faced with finding ways to reduce the average time between failures (MTBF) approach.

Many producersbeing the front-end load engineering studies, which analyze the life of the well, as it relates to oil extraction process used in products and equipment investment costs and operating expenses, these products and devices can make at each stage of production wells maximization, from the beginning until the completion of the first artificial lift after.

In the past 25years, shale oil technology has made great progress, operators and service companies are still using these advanced technologies to promote shale gas production, such as double-pole promotion. (RRL), electric submersible pump (ESP) and gas lift techniques are included in these advanced technologies. In addition, industry refining technology has a greater concern, as with screw elastomer (PCP), and is used in the production tubing and drill pipe of high temperature resistant paint.

Becauserod pump (SRP) is still applied to shale oil deep inclined (United States more than 350,000 wells using SRP technology) the most common method, so focused on shale oil industry due to side-load MTBF (MTBF) increases, pumping assembly, as well as mobile and pumping downhole pump failure caused by recovery of solid material and gas migration .

In addition, when the job is trying to set up a conventional tubing sealer will encounter some difficulties, which requires the ability to identify some common problems associated with deep inclined.

The advantage ofusing the CR is can reduce friction and paraffin wax, thereby contributing to increase productivity. Furthermore, sucker rod can rotate regularly, so that the chemical treatment process better contact surface effects. Not all deep inclined CR solutions in aggressive situations well, it requires the use of polymers and nano-coating, but more importantly, CR helps to reduce the average time between failures (MTBF).

Othertechniques, such as quarter-turn type tubing anchors and self-adjusting packing box has also made great progress, these two technologies are concerned about the technology industry, because they have been successful in their installed base, in particular to address the side-loading and pumping machine device assembly asymmetry.

1/4rotation anchor tension tubing packer catcher is a good choice. Many operators are removed member packer to handle on hydrocarbon migration and solid substances. Set up a multi-ring packer or tubing anchor, when it is in the 3,048m and the side load exceeds 1501b, the operator is facing great challenges. In many cases, even the most experienced workover supervisor install these tools in a deep deviated will feel that this is a challenge. But the fourth rotation tension tubing anchor catcher for the user to save time and cost advantage lies. Another way to get traction anchor is hydraulic anchor. Although it is not a trap,it is a solution for the operator when the tubing cannot rotate.

Currently, onlya few effective techniques to solve problems related to deep-inclined. These techniques are not "universal", but the solutions to deal with deep inclined specific problem. Continuous rod (CR), tubing anchor catcher and self-adjusting packing box designed to combine old and new technologies that can help these deep drilling deviated effective, and with the average time to failure (MTBF) has a positive correlation.

To make the most effective use of artificial lift systems, each well should be designed individually based on its own characteristics. In recent years,the shale gas exploitation push US to achieve energy independence, but that does not mean there is no challenge to the development of shale gas. Drilling and completion of horizontal wells cost factors continue to drive industry experts and engineers seek more economical way exploit these unconventional hydrocarbon reservoirs.

Newdrilling technology allows drilling speed, due to hydraulic fracturing technology is one of the key factors driving the cost of production of shale oil, so the well site, the spring and the bulk of drilling and fracturing technology is becoming increasingly popular in the shale mining.

It is reported thatthe largest shale oil production comes from the electric submersible pump group (ESP). However, most drilling is through the use of a reciprocating rod upgrade (RRL) or rod pump (SRP) to complete the construction job: engineer faces optimize production and extend well life challenges on the basis of regular front-end engineering studies to predict the performance of the life of the well. Situ modeling and comprehensive understanding of the effects of different crop-completions and artificial lift methods, can significantly reduce the total cost of production wells mouthful, and increase production in order to make positive correlation producers ultimately profitable investment.

With therapid development and use of the drilling industry frac sand in hydraulic fracturing in shale oil production is now faced with many new challenges. Despite the fracturing process also need to inject sand, but many forms of artificial lift is not designed to handle solids since wellbore production methods. In the heavy oil production in Canada, Venezuela, Colombia and California, the PCP (PCP) is the most commonly used artificial lift way. This is a fundamentally based on a spiral design with a rotor and a stator, and its main purpose is the production of solids and high viscosity oil. Producers are trying different ways to achieve artificial lift optimization of production purposes.

Currently,due to the oil and gas industry more effective exploitation of shale oil, shale oil has so deeply inclined to form a side-loading case, which is mainly reflected in the vertical section and the horizontal portion of the well, and sometimes kick after flowback related frac sand clogging. Because inclination sake, the average drilling industry MTBF (MTBF) is increasing. In deep inclined, one common problem is a side-loading case, rod and tubing wear experienced side loads than 150psi, will result in the tubing string broken rod or hole early failure.

Due to theinfluence of the best construction practices, mechanical failure is reduced, but there is still clogged with sand fracturing combining side-loading case. Therefore, most producers are faced with finding ways to reduce the average time between failures (MTBF) approach.

Many producersbeing the front-end load engineering studies, which analyze the life of the well, as it relates to oil extraction process used in products and equipment investment costs and operating expenses, these products and devices can make at each stage of production wells maximization, from the beginning until the completion of the first artificial lift after.

In the past 25years, shale oil technology has made great progress, operators and service companies are still using these advanced technologies to promote shale gas production, such as double-pole promotion. (RRL), electric submersible pump (ESP) and gas lift techniques are included in these advanced technologies. In addition, industry refining technology has a greater concern, as with screw elastomer (PCP), and is used in the production tubing and drill pipe of high temperature resistant paint.

Becauserod pump (SRP) is still applied to shale oil deep inclined (United States more than 350,000 wells using SRP technology) the most common method, so focused on shale oil industry due to side-load MTBF (MTBF) increases, pumping assembly, as well as mobile and pumping downhole pump failure caused by recovery of solid material and gas migration .

In addition, when the job is trying to set up a conventional tubing sealer will encounter some difficulties, which requires the ability to identify some common problems associated with deep inclined.

The advantage ofusing the CR is can reduce friction and paraffin wax, thereby contributing to increase productivity. Furthermore, sucker rod can rotate regularly, so that the chemical treatment process better contact surface effects. Not all deep inclined CR solutions in aggressive situations well, it requires the use of polymers and nano-coating, but more importantly, CR helps to reduce the average time between failures (MTBF).

Othertechniques, such as quarter-turn type tubing anchors and self-adjusting packing box has also made great progress, these two technologies are concerned about the technology industry, because they have been successful in their installed base, in particular to address the side-loading and pumping machine device assembly asymmetry.

1/4rotation anchor tension tubing packer catcher is a good choice. Many operators are removed member packer to handle on hydrocarbon migration and solid substances. Set up a multi-ring packer or tubing anchor, when it is in the 3,048m and the side load exceeds 1501b, the operator is facing great challenges. In many cases, even the most experienced workover supervisor install these tools in a deep deviated will feel that this is a challenge. But the fourth rotation tension tubing anchor catcher for the user to save time and cost advantage lies. Another way to get traction anchor is hydraulic anchor. Although it is not a trap,it is a solution for the operator when the tubing cannot rotate.

Currently, onlya few effective techniques to solve problems related to deep-inclined. These techniques are not "universal", but the solutions to deal with deep inclined specific problem. Continuous rod (CR), tubing anchor catcher and self-adjusting packing box designed to combine old and new technologies that can help these deep drilling deviated effective, and with the average time to failure (MTBF) has a positive correlation.

To make the most effective use of artificial lift systems, each well should be designed individually based on its own characteristics.

 

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