Laboratory investigations of a hybrid mud pulse telemetry (HMPT) – A new approach for speeding up the transmitting of MWD/LWD data in deep boreholes

Berro, Mouhammed Jandal; Reich, M.

doi:10.1016/j.petrol.2019.106374

Cited by 32 publications

(17 citation statements)

References 2 publications

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“…Telesystems with a hydraulic communication channel [ 1 ], which have gone through the path of long experiments on a positive or negative impulse, stopped their evolution at the ubiquitous choice of the former, so we will not even consider the latter. This will allow them to be divided only according to the principle of operation of a hydraulic pulser: with a rotating and so-called “poppet” flow shut-off mechanism.…”

Section: Resultsmentioning

confidence: 99%

New Reality of Directional Drilling Services During Production Decline and Coronavirus Pandemic

Zhivaeva

Lukyanov²

2020

Lecture Notes in Networks and Systems

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The year 2020 introduced unexpected critical structural changes into a rather conservative sector of drilling services. In a situation where the confirmed volumes of work are unpredictably transferred, postponed, halted, or re-negotiated, the leaders of high-tech service companies providing technical and technological support for oil and gas drilling, had to make a number of strong-willed decisions in order to continue to support the telemetry equipment fleet and retain a team of engineers by staying in the market. Of course, there are those who are not ready for this. In this article, we will look at the technical side of this reboot through a careful optimization of resources used by drilling service companies.

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Section: Resultsmentioning

confidence: 99%

New Reality of Directional Drilling Services During Production Decline and Coronavirus Pandemic

Zhivaeva

Lukyanov²

2020

Lecture Notes in Networks and Systems

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“…According to the theory of electromagnetic field and electromagnetic wave, it is known that the constant magnetic field is excited by constant current, which is another special form of the electromagnetic field. Considering the fact that the constant current and sum do not change with time, the basic equation integral form of the constant magnetic field is obtained from Maxwell's equations, as shown in Equation (10):…”

Section: Mathematical Model Of Magnetic Field Distribution Around Dow...mentioning

confidence: 99%

“…However, in the acoustic transmission channel, the noise is strong, the interference is large, and the attenuation is serious, which lowers the transmission accuracy [8,9]. The drilling fluid pressure pulse transmission method uses the drilling fluid as a channel for pressure wave information transmission, which is the most widely used technology at present [10,11]. An early measure while drilling (MWD) mud telemetry system generates a pressure pulse in the mud channel using a plunger valve and transmits downhole data with the baseband transmission pattern.…”

Section: Introductionmentioning

confidence: 99%

Research on New Drilling Downlink Communication Based on Anisotropic Magnetoresistive Technology

Zhang

et al. 2022

Energies

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With the continuous improvement of automatization of underground oil and gas resources exploitation, more and more instructions are required for the control technology while drilling in complex processes. The conventional downlink communication technology has shortcomings, such as data transmission lag and high bit error rate, which cannot meet the actual needs. Therefore, developing a new high-speed and low bit error rate (BER) downlink communication technology is very important. In this study, a new type of downlink communication system based on the electric current field is designed. Firstly, based on the theory of electromagnetic field and electromagnetic wave, the current distribution model of the drill string is established. Then, the magnetic field distribution model of the drill string is deduced according to the research on the static electromagnetic field and boundary problems. Finally, the ground simulation experiment platform of the downlink communication system is built and tested. The experimental results show that the BER is only 1.02% when the data transmission rate is 1 kbps. To further reduce the BER of the system, the influence factors of information transmission such as different transmitting voltage, inter-electrode distances, and working temperature are tested and analyzed, respectively, which provides ideas for optimizing the technology of downlink information communication while drilling.

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“…A higher transmission rate of downhole information of MWD/LWD can make the drill bit travel along a predetermined track in real time to achieve safe drilling [2]. e telemetry drill string system [3,4] uses a high-frequency electromagnetic signal to realize the high-speed wired transmission of downhole information, and the transmission rate can reach 2 Mbit/s, which is much higher than the conventional wireless transmission technology of downhole information such as mud pressure pulse [5], formation electromagnetic wave [6], and drill string acoustic wave [7,8], indicating good potential for practical application. e system is composed of a series of wired drill pipes.…”

Section: Introductionmentioning

confidence: 99%

Circuit Modeling and Signal Transmission Analysis of Inductive Coupler in Wired Drill Pipe

Jia

Shen

et al. 2021

Mathematical Problems in Engineering

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The telemetry drill string transmits the measured drilling and formation parameters near the bit to the ground at high speed through the transmission line in the wired drill pipe and the inductive coupler formed by the coil embedded in the drill pipe joint. The voltage transfer function of the inductive coupler seriously affects the signal transmission characteristics of the telemetry drill string. Present research methods cannot accurately and quantitatively describe the influence of the electromagnetic parameters of the inductive coupler on its voltage transfer function. This paper quantitatively analyzes the effects of the electromagnetic parameters of the inductive coupler on signal transmission through reasonable high-frequency circuit modeling. The generation mechanism of eddy current in the magnetic core and the interaction mechanism between eddy current and coupling coils are studied using the electromagnetic detection analysis method of nondestructive testing (NDT) technology. Then, the high-frequency circuit model of the coupler containing eddy current loss is established. The mathematical model of input impedance and signal transmission characteristics of the inductive coupler is established through circuit analysis. The influence of the electromagnetic parameters of the magnetic core and the load resistance of the coupler on the voltage transmission characteristics and power transmission characteristics of the coupler is studied. The research results show that the relative permeability of the magnetic core, load resistance of the coupler, and signal frequency seriously affect the signal voltage transmission. When the relative permeability of the magnetic core material reaches 50, the voltage transmission of the inductive coupler is effectively improved. The electromagnetic simulation results are consistent with the theoretical analysis of the circuit model, which proves the correctness of the circuit model. This paper provides theoretical guidance for the electromagnetic design of inductive couplers and the improvement of signal transmission characteristics of telemetry drill string.

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Laboratory investigations of a hybrid mud pulse telemetry (HMPT) – A new approach for speeding up the transmitting of MWD/LWD data in deep boreholes

Cited by 32 publications

References 2 publications

New Reality of Directional Drilling Services During Production Decline and Coronavirus Pandemic

New Reality of Directional Drilling Services During Production Decline and Coronavirus Pandemic

Research on New Drilling Downlink Communication Based on Anisotropic Magnetoresistive Technology

Circuit Modeling and Signal Transmission Analysis of Inductive Coupler in Wired Drill Pipe

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