White Well is our unique fully-integrated product designed to increase the time between oil production equipment failures in severe downhole conditions.
Possible abnormal field conditions
Carbon dioxide and hydrogen sulphide
Higher water content
Influx of mechanical impurities
High temperatures and pressure
A comprehensive approach to increasing production
White Well helps boost oil production in severe downhole conditions by increasing the equipment failure-free operation period.
Formation fluid analysis makes it possible to precisely design and optimise equipment for efficient field development
Precise analysis plays a key role in severe conditions, where paraffins, mechanical impurities, gas content and other factors reduce the operation period of standard submersible equipment.
Optimal selection of electric submersible equipment and tubing
Severe field conditions accelerate the corrosion process and reduce the useful life of submersible equipment. Thanks to the unique selection of materials and alloys for equipment designed for a specific well, the time between failures goes up. The application of a special galvanic coating increases wear resistance ten-fold, reducing the coefficient of friction by a factor of four, thus contributing to a reduced overhaul interval.
Production and delivery of equipment and tubing
Rimera-Service specialises in the repair and servicing of equipment and tubing in key regions of Russia: Khanty-Mansi Autonomous Area, Yamal-Nenets Autonomous Area, and the Volga Region. Today, Rimera-Service is a network of nine service centres in close proximity to large fields.
To ensure quality installation and a long useful life of equipment, the transportation, installation and commissioning is supervised by the same technical professional.
White Well equipment
This includes the complete set of tubing plus ESP /sucker rod pump units manufactured from special materials with due account of the operating conditions and design characteristics of wells.
- ESP units
- Sucker rod pump units
Submersible electric centrifugal pumps
Gas separators and dispersers
The disperser is designed for grinding the gas inclusions in the formation fluid, preparing a homogeneous gas-liquid mixture and its supply to the inlet of a submersible centrifugal pump.
The use of special electrical materials allows operating the submersible electric motors at the formation fluid temperature up to 120 °C; in high-temperature-resistant version, up to 150 °C. Once assembled at special rigs, where the quality of individual components is controlled, the electric motor is tested at the station under the conditions close to reality, including with heating up to operating temperatures.
Cable lines and extension cords
For the manufacture of cable lines and extension cords, the following cable make-ups are used:
- From Russian manufacturers, for an operating temperature of +90 °C.
- From Russian manufacturers, for an operating temperature of +120 °C, including with corrosion resistant steel armor.
- From Russian manufacturers, for an operating temperature of +130 °C, including with corrosion resistant steel armor.
Heat-resistant cables from Russian manufacturers and well-known world companies (Pirelli, REDA, CENTRILIFT, KABLOVI (SERBIA)), with the cross-section of 10, 13.3, 16, 21.15 mm2, withstanding the operating temperatures up to +230 °C. The extension cord is made of oil-immersion flat three-core armored cable with the core sections of 10, 13.3, 16, 21.15, 35, 50 mm2.
The TMS-4 submersible telemetry complex allows measuring an expanded scope of well parameters and is intended to be used with a hardware-software complex that implements the “smart well” concept.
Main advantages and features:
- expanded scope of measured parameters allows implementing the "smart well" concept;
- reliable and fast information transmission channel;
- it has fully digital control;
- independent power supply of the submersible unit;
- can be installed in a control station from other manufacturers.
Sucker rod pumps
All pumps being manufactured are modified for domestic borehole equipment for their installation in tubing string (with non-aligned ends) as per GOST 633-80 and connection to the line of rods as per GOST 13877-96. In order to connect the filters or other protective devices to the pump bottom: the LP internal thread (pipe thread), 1:16 taper and 11.5 threads per inch. Thread diameter: 1˝, 1 1/4˝, 1 1/2˝, 2˝ (depending on the pump type and diameter).
Sucker rod pump drives
They are used as an individual mechanical drive of a submersible (borehole) sucker rod pump for oil production.
PNShT drives (pedestal mount design) are equipped with two-stage and three-stage gearboxes and motors of various power and speed versions. Due to this, there is a possibility to select a drive version, which provides the optimum mode of oil pumping at minimum power consumption.
To maximize the safety of the drive operation, it is equipped with a special barrier 2 meters high, which restricts the access to both the pumping unit and the wellhead. In addition, the gearbox hatch and the drain plug are protected from unauthorized opening and oil draining.
High-speed and low-speed stages: chevron gear with the thermally improved Novikov engagement.
They are equipped with chevron gears with the thermally improved Novikov engagement.
They are equipped with coarse-pitch gears with the thermally improved Novikov engagement:
- Low speed: cylindrical, with thrust collars;
- Intermediate: chevron;
- High speed: cylindrical helical.
- T-type gearboxes:
- Special plug preventing an unauthorized drain of lubricant from the gearbox;
- Forced-crankcase lubrication system for bearings and gears;
- The gearbox design is patented, patents Nos. Pat2191937RF (Пат2191937РФ), Pat51147RF (Пат51147РФ).
Mechanical impurities control equipment
They are designed to protect the pump from foreign particles exceeding 3 mm.
The filter is a pipe with a welded plug and 3 mm holes. The upper part of the pipe has an LP connecting thread (pipeline taper), which corresponds to the internal thread in the bottom part of the pump (or the anchor shoe of RHBM pumps).
It is designed for the separation of oil dissolved gas and mechanical impurities contained in the well fluid. It is to be mounted at the sucker-rod pump suction; it is recommended to install a sludge storage pipe below the gas-sand anchor (for the collection of mechanical impurities).
Dual operation equipment
- The main features of the equipment:
- Change of pumps without breaking the packer and lifting the tubing;
- Separate accounting of production;
- Possibility of field research;
- Gas removal from the lower pump suction;
- Maintainability under the conditions of service bases;
- Theoretical capacity range (N = 6, L = 2.5):
- Bottom pump: 12.4 m3/day to 24.5 m3/day;
- Top pump: 8.4 m3/day to 42.8 m3/day.
- Theoretical capacity ratio (Qtop/Qbot): 0.34 to 3.46.
It is designed for interval pressure testing of the tubing string during the electric centrifugal pump tripping as well as for shutting off the fluid flow when the pump is stopped. It is used for a rodless well operation. It is installed in the tubing string above the pump.
SKOK drain valve
The drain valve of the detachable design is used for the fluid drain from the tubing string. When using the valve together with a tubing pump with a non-detachable suction valve (TNM-T), the valve is to be installed on the upper coupling of the pump or embedded in the tubing string above the pump.
KON cut-off valve
The cut-off valve is designed for repair of wells without killing them in case of replacement of pumps without lifting the tubing. It is installed under the anchor shoe of the plug-in pump.
Tubing + threads
The tubing is manufactured using high-technology equipment at the PNTZ's Oil Pipe Rolling Plant Finish Center. All seamless tubing production phases fully comply with ISO 9001 and API Specification Q1, API Spec 5CT, GOST R 53366, GOST 633-80.
Advantages of a "white well"
Single centre of responsibility
Rental and servicing
Pilot run of equipment at the Tomskneft well stock
Implementation of the White Well project has helped to considerably increase the operating time of submersible equipment in corrosive environments.
increase in the operating time of well No. 1, to 873 days
increase in the operating time of well No. 2, to 1,107 days
Online request for equipment
Please contact us to ask any questions.