Construction of a 1400m oil well at Gremikhinsky

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In the course work, an inclined directional production well is designed with a depth of 1400 m with a bottom drift from the vertical of 450 m at the Gremikhinsky oil and gas field of Udmurtia.
Well construction: direction 393.7mm 30m, conductor 295.3mm 600m, production casing 215.9mm 1400m. Roller cone bits, hydraulic cutter under EC D2-195.
The coursework was completed in 2019 for the UDMURT STATE UNIVERSITY on the basis of a real group project on Gremikha in accordance with the MU Associate Professor of the Department of Oil and Gas Institute of Oil and Gas named after M.S. Gutserieva Kuzmina V.N. and contains enough information to write a diploma based on it.
TABLE OF CONTENTS
The list of used conventions ……………………………………… 5
Introduction …………………………………………………………………………… .. ……… .6
1 BACKGROUND OF THE PROJECT. GENERAL INFORMATION ABOUT THE AREA OF WORKS ……………………………………………….… .. ……… 7
2 GEOLOGICAL SECTION ..............................................
    2.1 Lithological and stratigraphic characteristics of the well section ....... .... ... ..12
     2.2 Physical properties of rocks …………………………………………… ..14
    2.3 Oil and gas content ......................
    2.4 Reservoir pressures ……………. ………………………………… .. …… .. …… ... 18
   2.5 Possible complications in the section of the well ………………………….… ..19
3. TECHNOLOGICAL SECTION ……………………………………………………… 23
     3.1 Design of the well .......................................... 23
     3.2 Profile and trajectory of the wellbore ………………………. ………… .. 28
     3.3 Deepening of the well ...................................................... 32
            3.3.1 Justification of the diameter of bits ………………………. ………………… 32
            3.3.2 Calculation of the depth of descent of the conductor ……………………………. …… ..33
3.3.3 Calculation of weighted drill pipe (UBT) .............. ..................... 34
3.3.4 Calculation of steel drill pipe (SBT) ...................... 35
3.3.5 Calculation of drill strings during drilling using a downhole motor (calculation of the maximum permissible depth of descent of drill pipes) ... .. ……………………………………………… .. ……………… ……… .35
3.3.6. Calculation of drill strings in the rotary method of drilling ........ ....
3.3.7 Hydraulic calculation of wellbore flushing during drilling using rotary and turbine methods ...................................... 40
3.3.8 Methods and modes of drilling. Lineups …………………………… ..45
3.3.9 Selection of the drilling rig .............................................. ...................... ..63
     3.4 Drilling fluids …………………………………………. ………. ………… .66
        3.4.1 Justification of the density of the used drilling fluids ... ..... 66
        3.4.2 Chemicals and treatment of drilling fluids ... .. ……. …… .69
                 3.4.2.1 Mud treatment ...................................................... 69
                 3.4.2.2 Monitoring the parameters of the drilling fluid ……………………… 80
           3.4.3 Safety requirements when working with chemicals ... ... 81
       3.4.4 Drilling fluid .............................. .............................. 82
4 ACTIONS TO PREVENT ACCIDENTS AND COMPLICATIONS DURING CONSTRUCTION OF A WELL ……………………………………… ... ...................... 90
4.1 Measures to improve the quality of the opening of reservoirs ... ..93
4.2 Measures for the prevention and early detection of GNVP ......... .... 95
4.3 Measures for the prevention and elimination of mud losses .................................................. 102
4.4 Measures to prevent rock collapse ………………………… 105
4.5 Measures to prevent sticking during passage through tack-hazardous areas …………………………………………………. ………… .108
4.6 Measures to prevent emergencies arising from the drilling of directional and horizontal wells ........... 112
5 INDUSTRIAL AND ENVIRONMENTAL SAFETY ... ... ... ... ... ... 114
CONCLUSION ...................... ...................... ...................... 146
LIST OF USED SOURCES ……………. ………………… ..147
Applications:
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