Background introduction:

The purpose of drilling is to establish an output pipeline for underground oil and gas resources. Obtain reservoir information of oil, gas, and water in underground rocks. And drilling fluid is a circulating flushing medium used during the drilling process and inside the hole. After the oil and gas bearing rock layers are drilled, a part of the oil and gas remains in the rock sample, while another part enters the drilling fluid. Therefore, the performance of drilling fluid will undergo various changes when encountering oil, gas, water layers, and special lithological formations. Based on these changes, the reservoir will be evaluated.
With the rapid development of drilling technology, combined with the characteristics of China's geological formations, some new drilling processes and technologies that save drilling costs, improve drilling production efficiency and speed have been widely used in drilling production. Among them, the use of high-speed, low bit pressure and PDC drill bits is an example: it adopts a screw and rotary disc composite drilling method, relying on the high-speed rotation of PDC drill bits to shear and grind drilling. Its characteristics are high efficiency, fast speed, and few faults. The drilled rock fragments are extremely small, and some of them even turn into powder, which undoubtedly has a great impact on the quality of geological data acquisition. Nuclear magnetic resonance, as a non-destructive and highly sensitive detection method, utilizes the difference in relaxation time and combines cutting-edge inversion techniques to accurately test the crude oil content in drilling fluids.

Product Introduction:

MicroMR drilling fluid nuclear magnetic resonance analyzer（Nuclear Magnetic Resonance Logging Instrument _ Online Drilling Fluid Nuclear Magnetic Resonance Analyzer _ Oil Saturation Tester）This product has a frequency of approximately 20MHz and is carefully developed for the testing needs of drilling fluid samples with different characteristics, providing you with the most professional and matching drilling fluid analysis application solution.
MicroMR drilling fluid nuclear magnetic resonance analyzer（Nuclear Magnetic Resonance Logging Instrument _ Online Drilling Fluid Nuclear Magnetic Resonance Analyzer _ Oil Saturation Tester）Compact in size and structure, it is a desktop MRI analyzer with horizontal capabilities; The instrument measurement results are objective, accurate, and have good repeatability. The instrument performance is stable and cost-effective. Equipped with independently developed nuclear magnetic resonance drilling fluid oil-water analysis software, the operation is simple, the design is friendly, and it can automatically calculate parameters such as oil quality coefficient, oil content, and water content of drilling fluid and oil mud samples.

Application solutions in the field of drilling fluid:

1. Quickly and accurately detect the oil and water content of drilling fluid;
2. Real time online monitoring of changes in oil-water content in drilling fluid, reflecting formation conditions (such as the discovery of oil and water layers);
3. Detection of changes in micro water content and oil content;
4. Analysis of crude oil quality (such as heavy oil, light oil, viscosity, etc.)
5. The influence of different additives on the properties of drilling fluid (such as fluidity, etc.);
6. Quickly analyze the oil and water content in oil sludge samples.

T2 spectral peak of drilling fluid, oil-water content of sample separation

Oil content of drilling fluid

Application examples of nuclear magnetic resonance in drilling fluid

The well depth is 1542m, and the oil peak area measured by nuclear magnetic resonance of drilling fluid is 5.228201, with a relative oil content of 0.01519% and a unit volume oil content of 0.0264. Compared with the upper reservoir, it has a higher increase and a certain oil abundance. The well depth is 1575m, and the oil peak area measured by nuclear magnetic resonance of drilling fluid is 12.65997, with a relative oil content of 0.041953% and a unit volume oil content of 0.052065. Compared with the upper and lower reservoirs, it has a higher increase and a certain oil abundance. （）

Note: If there are any changes in the appearance of the instrument, the data formula shall prevail