Distributed fiber optic temperature measurement online temperature monitoring system for oil and gas pipelines in oil wells-INNO

Fiber optic temperature measurement for oil pipelines

Hivi majuzi, with the increasing global energy demand, the development of unconventional resources such as heavy oil, oil sands, and shale gas is also constantly evolving. DTS distributed temperature sensors promote the effective recovery of unconventional resources by monitoring the distribution of underground temperature. The distributed fiber optic temperature measurement system adopts the fiber optic temperature measurement technology of FJINNO, which can adapt to the harsh environment required by oil and gas mining sites, and can operate at effective power. Aidha, the DTS system enhances its relationship with customer networks by providing interfaces with production control systems using security protocols and using data formats that are industry standards for oil and gas. Ili kuhakikisha uchimbaji madini, ni muhimu kufuatilia mabadiliko katika usambazaji wa joto la bomba.

Upimaji wa joto la fiber optic kwa visima vya mafuta

Fiber optic sensorer joto kusambazwa (DTS) inaweza kupima usambazaji wa joto pamoja na nyuzi za macho na urefu wa mita elfu kadhaa na inaweza kutumika kwa maeneo haya ya madini. Hata hivyo, bidhaa za kawaida huwa na matatizo fulani zinapotumiwa katika hali mbaya ya mazingira kama vile maeneo ya uchimbaji wa mafuta na gesi. Kwa hiyo, wateja wanaojishughulisha na uchimbaji wa rasilimali wamekuwa wakitafuta vihisi joto vinavyosambazwa vya nyuzinyuzi zenye upinzani bora wa mazingira kama suluhisho la kuboresha ufanisi wa uchimbaji wa rasilimali..

Ili kukidhi mahitaji ya wateja na kutatua matatizo ya asili, a DTS distributed temperature sensor for mining resource extraction sites was developed by applying its professional knowledge of fiber optic measurement technology to process control. DTS measures the temperature distribution along the optical fiber, which is also used as a sensor. Kwa mfano, a 6-kilometer-long fiber optic can measure the temperature at a one meter interval along the fiber optic, totaling 6000 pointi. DTS has the following features that are superior to products from other manufacturers: tolerance for harsh environments, ukubwa mdogo, uzito mwepesi, na matumizi ya chini ya nguvu.

Fiber optic temperature measurement system for oil and gas pipelines, fiber optic iliyosambazwa mfumo wa ufuatiliaji wa joto mtandaoni

Temperature and pressure are very important factors in many underground operations, so for a long time, operators have been using thermal measurement methods to monitor the performance of production wells. Kwa kweli, since the last century, engineers have conveniently used wellbore temperature data to calculate flow contribution, evaluate water injection profiles, analyze the effectiveness of fracturing operations, determine the cement top surface outside the casing, and identify interlayer flow. The traditional underground temperature and pressure detection methods have shortcomings in terms of intrinsic safety, explosion-proof performance, upinzani mkubwa wa kuingiliwa kwa umeme, electrical insulation performance, nk., making it difficult to meet the high requirements of underground operations. FJINNO provides a distributed fiber optic online temperature monitoring system that can continuously monitor temperature within the wellbore range, with high monitoring accuracy, good explosion-proof performance, anti electromagnetic interference performance, and electrical insulation performance, na kuegemea juu. With the advancement of oil extraction technology, the requirements for real-time data collection in the oil extraction process are becoming higher and higher. The commonly used thermocouple temperature measurement is vulnerable, its service life cannot be guaranteed, and its measurement accuracy is limited, which can no longer meet the requirements of underground data collection. Fiber optic temperature measurement has been applied to the measurement of oil reservoir temperature in oil wells to a certain extent.

The fiber optic distributed oil well monitoring system includes temperature measuring optical fibers laid along the wellbore and pressure signal transmission optical fibers; The upper end of the temperature measurement fiber optic cable is connected to the DTS sensor (Raman temperature sensor) located on the well, and the lower and upper ends of the pressure signal transmission fiber optic cable are respectively connected to the fiber optic F-P cavity pressure sensor and modem; The signal output terminals of DTS sensors and modems are connected to the network through communication modules; The system also includes remote monitoring terminals connected to the network and capable of receiving signals from fiber optic temperature sensors.

Distributed fiber optic temperature measurement device

The monitoring terminal includes a display screen for displaying monitoring information and an alarm system for issuing alarm signals.

The mfumo wa kipimo cha joto cha fiber optic iliyosambazwa for temperature monitoring belongs to continuous distributed measurement, without measurement blind spots, and can achieve a detection distance of more than 10 kilometers at most. Due to the fact that the fiber optic itself is a sensor, it is easy to install, requires less maintenance work, and has high reliability; Aidha, due to the characteristics of fiber optic transmission, the intrinsic safety, explosion-proof performance, upinzani mkubwa wa kuingiliwa kwa umeme, and electrical insulation performance of the entire monitoring system are significantly improved. Teknolojia iliyosambazwa ya kipimo cha joto cha nyuzi macho hutumiwa sana katika kipimo cha joto na ufuatiliaji katika maeneo ya hatari, maeneo muhimu, kipimo cha joto la uso wa chombo cha shinikizo na ufuatiliaji, large-scale temperature measurement and monitoring, pamoja na kipimo cha joto na ufuatiliaji katika uwanja wa usafiri. In the petroleum industry, distributed fiber optic temperature measurement technology can provide real-time and full wellbore temperature detection data, which is suitable for determining the temperature of oil and gas reservoirs, determining the location of liquid and gas production, and detecting pipeline leaks. Wakati huo huo, fiber optic sensing has the characteristics of electrical insulation, upinzani wa kutu, upinzani wa kuingiliwa kwa sumakuumeme, na usalama wa ndani, making it more suitable for use in oil and gas extraction processes.

According to the different installation positions of optical fibers, distributed optical fiber temperature measurement technology can measure three temperature profiles:

1) Formation temperature: The original formation temperature of an oil and gas reservoir, which is related to the geothermal gradient and thermal conductivity properties of the reservoir.

2) Inflow temperature: The temperature of oil and gas reservoir fluid at the sand surface (before flowing into the wellbore), also known as the sand surface temperature of the oil and gas reservoir. Due to the thermal effects such as viscous dissipation and thermal expansion caused by pressure difference in fluid flow in porous media, the temperature at the point of fluid inflow will be different from the original formation temperature. On the contrary, if there is no fluid flow in the formation, the inflow temperature of the gas reservoir measured by distributed fiber optic temperature measurement in a timely manner will be very close to or equal to the formation temperature of the gas reservoir.

3) Wellbore temperature: the temperature at which fluid flows into the wellbore from the point of inflow and mixes with the wellbore fluid.

The distributed fiber optic temperature measurement device for oil and gas wells is easy to operate, ina utulivu mzuri, usahihi wa juu, complete structure, stable signal source, maisha marefu ya huduma, and strong resistance to extreme environments, which compensates for the shortcomings of traditional PT100 temperature measurement methods such as cumbersome operation, utulivu duni, and low accuracy.