ODESSA SEPARATOR INC

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OSI TOOLS - LONG RUN TIMES

Odessa Separator, Inc is a world leader in downhole fluid conditioning systems and is an internationally recognized provider of downhole filtration, gas separation, and chemical tools. Offers a varied product selection that to solutions for any downhole problems.  OSI engineers will design well-specific BHA’s and the OSI Ph.D. chemists can tailor specific treatment regimens. 

 Press Releases

• New Mechanism of Sand Management Above ESPs: Cases Study in Colombia (Sep 17, 2022)

  One of the most expensive artificial lift systems in the oil industry is the Electric Submersible Pump (ESP) system, hence the unavoidable need of extending the run life of wells that have installed this system. Following the need of extending the run life, a sand regulator has been designed to protect the pump during shutdowns, and it has been incorporated into traditional sand control configurations to offer extensive protection above and below the pump.

  This paper will explain the mechanism of the sand regulator as well as the benefit of installing this system alone above the pump or complemented with a sand control system below the pump. The candidate wells to this integrated solution were selected from MMV (Middle Magdalena Valley) and Putumayo Basins, in Colombia. The wells had sand problems history and it was necessary to review pump designs, pulling reports and sensor parameters. Well conditions such as production, tubing size, and particle size distribution were analyzed to build the best design for every single well. In the design the geometry of the well was assessed to accommodate the cable and CT (Capillary tube) line downhole.

  The ADN Field in Colombia is characterized by heavy oil production (API between 13-18°), with fluid production between 1,000-2,000 BFPD, with a viscosity of 270 - 3090 cP @ 122°F, water cuts oscillating depending on the waterflooding effect (Between 1% to 95%) and high fine sand production (200 – 24,000 ppm). The CH Field wells produce between 1,000 – 6,000 BFPD, with API between 17-20°, high water cuts (> 77%) and a high sand production between 100 – 3,000 ppm. The wells selected had other type of sand control and management systems and were highly affected by frequent shutdowns. The Sand Regulator design was installed in 20 wells and was compared with the performance achieved using traditional sand control solutions. After the installation, production has remained stable in all the wells applied, allowing to reduce the PIP of the well of up to 400 psi. Less current consumption has been observed after each shutdown in all the wells, extending the run life of some wells up to double the average. Sensor parameters were analyzed after each pump restart to determine how difficult it was to restart operation after shutdowns.

  Compared to the tools installed above the ESP, this sand regulator allows flushing operation through it with flow ranges from 0.5 to 5 bpm. In addition, the unconventional design of this tool has opened the door to a new concept of ESP protection that works in wells with light or heavy oil and can be refurbished or inspected completely without cutting the tool.

  
  Paper Number: SPE-209734-MS
  https://doi.org/10.2118/209734-MS

• A Revolutionary Packer Type Gas Separator that Involves Gravity Force to Exceed Traditional Gas Separation Efficiency in Oil and Gas Wells (Sep 17, 2022)

  A revolutionary packer-type gas separator was designed to improve downhole gas separation efficiency. A deep analysis of gas separation methods was done to understand the process's nature and design a tool that could generate enhanced conditions for the gas separation phenomenon.

  During the research stages where data from Permian fields were analyzed to develop this new design of gas separator, the engineering team found three main challenges in downhole gas separation. First, the wells were converted from Electrical Submersible Pump (ESP) to Rod Pumps earlier, forcing the downhole gas separators to handle more production. Second, the small production casing size usually is 5.5" casing, which significantly reduces the annulus area, which is vital to get an effective gas separation efficiency, and third the gas slugging behavior, which in high proportion can lead to a gas lock-in sucker rod pump system. A packer-type gas separator was designed, built, and tested in multiple wells following the requirements and limitations. This gas separator has an outlet section of 1.89" O.D., which means the design maximizes the gas separation area where it really matters at the fluid outlet point. The revolutionary fluid exit slots design creates a linear flow path allowing gas to separate and flow upward the casing annulus in a natural way. Additionally, a valve below the cup packer was included to eliminate surging. This valve prevents surging by holding the fluid in the vertical section, thus avoiding backflow when the gas slug leaves liquids behind. A calculator was developed to estimate the gas separation efficiency downhole and compare the gas separation efficiency among different gas separators to evaluate the new design. After the implementation of this design in 5 wells, the results confirmed the high gas separation efficiency obtained with this new gas separator configuration. The novelty of this gas separator design is the outlet section that takes advantage of the gravity force to increase the gas separation efficiency without limiting the tensile strength of the Bottom Hole Assembly (BHA).

  Paper Number: SPE-209749-MS

  https://doi.org/10.2118/209749-MS

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