Nature Gamma Measure While Drilling
Nature Gamma Measure While Drilling:
Research radioactive element relative amount in rock, real time detect nature gamma ray total intensity to indentify different lithology, for guide drilling job against geology parameter while drilling
Rock and minerals inordinately own some radioactive. It exists 65 kinds of radioactive elements in nature, mostly are rarely. Rock radioactive characteristic almost resulted by Uranium / Thorium / Actinium and Isotope K40 exists and decay progress. In these radioactive element decay progress, the redundant energy be radiated in high-energy electronic magnetic wave mode, it’s procedure of radiation gamma ray (or named photon).
Enter into reservior 11m @ angle 5°:
Near bit gamma: It has entered into reservior at VD of 0.96m.
Conventional gamma: It just enter into reservoir, gamma is reading.
If reservior thickness less than 0.96m, the bit has been out of it.
Azimuth Gamma:
Azimuth gamma surveys gamma from right above & under face of the hole, and transmits to ground;
Gamma data will be a slow change during approach to top/bottom boundary of hole;
Gamma data slow changes is out of sync, as a result of different direction of upside and downside gamma;
Locating the out-sync of upside & downside gamma data, it helps diagnose the tracking close top or bottom boundary situation.
Long life – High power downhole motor tech:
Excellent heat transfer property extends stator service life;
Even rubber expansion makes stator working more stable;
Each stage pressure-bearing higher, increase out-put power;
Increase bonding area between rubber and metal, enhance bond strength;
Lower sensitive to temp. & solvent, makes stable working longer;
Imported rubber: appropriate for oil based mud / salt water based mud
and high temp. etc.
Contact your KINGWELL representative today or visit www.kingwelloilfield.com to find out how the KINGWELL helps you 。also add WhatsApp 008618729329559 or jerry@kingwelloilfield.com give u fast reply
No. | ITEM | REQUIREMENT | Manufacturer PROPOSED SPECIFICATION |
1 | 8” OD Retrievable/ Reseatable Mud pulse telemetry and surveying system (probe type): |
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| Manufacture type? | Manufacturer to specify |
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| Type of Power source? Turbine or battery type? | Manufacturer to specify |
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| Telemetry type? | Manufacturer to specify |
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| Battery Life (in case of battery Type power source) | Minimum of 150 hours battery life both in logging and steering modes at high data transmission rate |
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| Tool measurements Type | Phase and attenuation resistivity with different spacing |
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| Tools memory | At least 2 MB capacity |
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| Directional & Inclination measurement Range | - Inclination : 0 - 95 deg - Azimuth : 0 – 360 deg - Tool face magnetic : 0 - 360 degree - Tool face Gravity : 0 - 180 degree |
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| Directional & Inclination measurement Accuracy | - Inclination : +/- 0.2 degree for all Inclinations - Azimuth : +/- 0.2 degree for inclination above 10 degree - Tool face : +/- 0.6 degree |
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| Switching inclination | 5 deg ≤ Inc ≤ 8 deg |
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| Gamma Ray measurements | Required |
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| Gamma Ray detector Type | Scintillation counters |
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| Gamma Ray measurement Range | 0 to 250 API w/ 0.5 cp resolution |
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| Gamma Ray measurement Accuracy | +/- 6% |
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| Gamma Ray measurement vertical resolution | 9” |
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| Gamma Ray sensor distance to btm of the tool | Manufacturer to specify |
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| Flow rate | 900 gpm |
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| Temperature rating | 150 degree C. |
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| Minimum pressure rating | 20,000 psi |
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| Minimum tool curvature | - 4˚/100ft while rotating - 15˚/100ft while sliding |
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| Minimum Sand content tolerance | 2 % V/V at max flow rate |
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| Minimum Solid content tolerance | 10 % |
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| Minimum Plastic viscosity Tolerance | 20 cp |
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| Minimum chloride tolerance | 200,000 ppm |
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| LCM Content tolerance | 50 lbs/bbl using fine to medium size of mica. |
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| Data Transmission Rate | - Survey : Maximum of 300 sec - Tool face : Maximum of 60 sec - Continuous Azimuth & Inc : Max of 240 sec |
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| Telemetry data rate | 6 - 16 bps ( 16 bps for imaging transmission) |
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| Connection Type | 6-5/8” Reg connection |
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| Fishing Equipments | Required (Manufacturer must provide a list of the fishing equipment for the tools. |
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