The measurement data of the micro-resistivity borehole imaging instrument can be recognized by geologists and reservoir engineers for providing high-resolution structural and sedimentary data for detailed reservoir description. In those thin turbidite sequence strata, if there is no core data of the whole well section, it may be the only practical method to determine the thickness distribution of the formation's net oil layer. In addition, it can also be used to help select oil test and perforation sections.
The use of oil-based or synthetic oil-based muds to reduce drilling risks and improve drilling efficiency has limited the use of conventional micro-resistivity borehole imaging instruments. To this end, Baker-Atlas has developed a micro-resistivity borehole imaging instrument-Earth Imager that can be used in oil-based mud drilling environments. The focusing technology of the earth imager can not only provide us with accurate, efficient and low-cost high-resolution wellbore image data in oil-based environment, but also the irregular wellbore, mud cake and mud invasion caused by the measurement data The impact is reduced to a minimum. Its 6 measuring arms and power-driven centralizer design can ensure that high-quality data can also be obtained in high-angle inclined wells and horizontal wells. The measuring plates of the 6 measuring arms can cover 64.9% of the 8-in wellbore area, which is twice that of ordinary 4-arm instruments. In addition, the small-area measuring plate design (9cm × 8cm) allows the instrument to be effectively adapted to a variety of wellbore conditions, such as wellbore collapse and irregular wellbores caused by drilling.
In the oil industry, for any new technology, the quality, repeatability, and reliability of the collected data and the ability to complete the collection work efficiently at the wellsite all affect the promotion of the technology. Through a large number of on-site experiments, it has been found that the reproducibility of the recorded data is very good in any borehole condition, sedimentary environment, and lithological stratum. In carbonate rock formations with complex structures in oil fields in the western mountainous areas of Canada, the comparison with previous oil-based environmental logging data shows that the data from the Earth Imager provides higher resolution and more detailed information. The repeatability of the repeated test and the main test data can only be seen in the water-based mud environment with excellent borehole conditions.
For thin sequence strata, such as deep-sea turbidite strata with extremely important economic value, using traditional "volume mudstone" interpretation models often leads to underestimation of stratigraphic productivity and reserves. Because of the "resistance parallel phenomenon" of the high conductivity mudstone layer, the reservoir as a whole has the characteristics of low contrast and low resistance. The rock characteristics and high-resolution details observed by the oil-based earth imager provide another new way for borehole image interpretation. In the field experiment example, the earth imager can identify reservoirs with a thickness of 1 in. These data have been successfully applied to the identification and interpretation of thin deep-sea turbidite sandstone reservoirs. In addition, the oil-based resistivity image can also be used to determine the production capacity of the reservoir. We know that the thin layered alternating sand and mudstone reservoirs generally have good continuity in the horizontal direction. If the total thickness of the reservoir reaches a certain value, then it is an excellent reservoir. On the contrary, dispersing muddy or overturning sandstone reservoirs has no exploitation value because it is difficult to reach a certain area of ​​oil spill.
In an exploratory well drilled in a deep-sea turbidite reservoir in the Gulf of Mexico, formation testing and well-testing data revealed some oil layers that conventional methods could not identify. The operator decided to use an oil-based mud borehole imager combined with a 3D Explorer to further confirm the formation test evaluation results. Compared with the traditional "volume mudstone" method, the use of new instruments allows:
(1) The calculated crude oil reserves increase by 30%;
(2) The effective area is divided into production and non-production layers;
(3) Accurate quantitative calculation of oil and gas reserves with little uncertainty.
This new wellbore imager, combined with other imaging instruments and interpretation models, brings new opportunities for the analysis of explosive, resistively heterogeneous reservoirs.
Chainsaw: Gasoline chainsaw. This is the smallest kind of chainsaw. It is powered by a small two-stroke gasoline engine, similar to the Brush Cutter, Outboard Motor, driven by a sprocket, and runs on the guide board through a dedicated cutting saw chain to achieve the purpose of cutting and pruning wood, branches, ice and other themes. Mainly used for landscaping pruning, replacing the special guide board can be used as a large wood carving, ice carving large outline modification
Chainsaw products have many advantages, such as large power, small vibration, high cutting efficiency and low cutting cost. It has become the leading hand-held logging machine in the forest area.
The chainsaw shock absorption system uses springs and high strength rubber shock absorption. Sprocket form for positive teeth, make the assembly chain more simple and convenient!
Excellent and reliable ignition device, oil supply system using adjustable oil pump.
Before use, you must read the operation manual carefully to understand the characteristics, technical performance and precautions of the chainsaw.
Before use, the fuel tank, the fuel tank of the machine to add enough oil; Adjust the tightness of the saw chain, neither too loose nor too tight.
Before operation, the operator should wear work clothes, helmet, protective gloves, dust-proof glasses or facial protective cover.
After the engine starts, the operator holds the rear saw handle with his right hand and the front saw handle with his left hand. The Angle between the machine and the ground should not exceed 60 degrees, but the Angle should not be too small, otherwise it is not easy to operate.
When cutting, cut off the lower branches first, and then saw the upper branches. Heavy or large branches should be cut in sections.
38cc petrol chainsaw,chain saw attachment,top handle chain saw
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