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| ==Wellsite data package== | | ==Wellsite data package== |
| | | |
− | A data package should be prepared for use on the wellsite containing all of the data needed for correlation and evaluation. This includes maps, offset well logs, the well prognosis, and any other data that the geologist believes may be useful. Only copies (not the originals) of these data should be taken to the field. | + | A data package should be prepared for use on the wellsite containing all of the data needed for correlation and evaluation. This includes maps, [[offset]] well logs, the well prognosis, and any other data that the geologist believes may be useful. Only copies (not the originals) of these data should be taken to the field. |
| | | |
| ==Well planning checklist== | | ==Well planning checklist== |
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| ===Lease status=== | | ===Lease status=== |
| | | |
− | * □ Ownership | + | * Ownership |
− | * □ Limitations (e.g., oil rights down to a certain formation; gas rights below a certain level) | + | * Limitations (e.g., oil rights down to a certain formation; gas rights below a certain level) |
− | * □ Nearby acreage availability (to extend play) | + | * Nearby acreage availability (to extend play) |
− | * □ Well permit filed with state? | + | * Well permit filed with state? |
− | * □ Survey (lease lines, ground elevation) | + | * Survey (lease lines, ground elevation) |
− | * □ “Legal” well location | + | * “Legal” well location |
| | | |
| ===Geological and economic justification=== | | ===Geological and economic justification=== |
| | | |
− | * □ Anticipated pay zone(s) | + | * Anticipated pay zone(s) |
− | * □ Anticipated pay type(s) (e.g., oil, gas, CO<sub>2</sub>) | + | * Anticipated pay type(s) (e.g., oil, gas, CO<sub>2</sub>) |
− | * □ Economic reserves | + | * Economic reserves |
− | * □ Economic scenario(s) | + | * Economic scenario(s) |
| | | |
| ===Geological description for each zone=== | | ===Geological description for each zone=== |
| | | |
− | * □ Name | + | * Name |
− | * □ Age | + | * Age |
− | * □ Depth | + | * Depth |
− | * □ Thickness □ Structure | + | * Thickness Structure |
− | * □ Lithology | + | * Lithology |
− | * □ Secondary and exotic minerals | + | * Secondary and exotic minerals |
− | * □ [[Porosity]] and [[permeability]] | + | * [[Porosity]] and [[permeability]] |
| | | |
| ===Environmental concerns=== | | ===Environmental concerns=== |
| | | |
− | * □ Weather | + | * Weather |
− | * □ Topography (e.g., is proposed location in a streambed?) | + | * Topography (e.g., is proposed location in a streambed?) |
− | * □ Environmental Impact Statement (EIS) needed? | + | * Environmental Impact Statement (EIS) needed? |
− | * □ Cultural hazards and considerations | + | * Cultural hazards and considerations |
− | * □ Accessibility | + | * Accessibility |
− | * □Safety hazards (training needed?) | + | * Safety hazards (training needed?) |
| | | |
| ===Drilling program=== | | ===Drilling program=== |
| | | |
− | * □ Straight, slanted, or horizontal well | + | * Straight, slanted, or [[Well types#Horizontal well|horizontal well]] |
− | * □ Anticipated total depth (TD) in measured depth (MD) and TVD (true vertical depth) | + | * Anticipated total depth (TD) in measured depth (MD) and TVD (true vertical depth) |
− | * □ H<sub>2</sub>S and other gases | + | * H<sub>2</sub>S and other gases |
− | * □ Over- and underpressured zones | + | * Over- and underpressured zones |
− | * □ Casing points | + | * Casing points |
− | * □ [[Drilling problems]] | + | * [[Drilling problems]] |
− | | + | ** Sloughing shales |
− | <list-item>Sloughing shales</list-item><list-item>Swelling shales</list-item><list-item>Salt beds</list-item><list-item>Faults</list-item><list-item>High angle beds</list-item><list-item>Lost circulation zones (e.g., fractures, excessive mud weight)</list-item>
| + | ** Swelling shales |
| + | ** Salt beds |
| + | ** Faults |
| + | ** High angle beds |
| + | ** Lost circulation zones (e.g., fractures, excessive mud weight) |
| | | |
| ===Communications for operators and partners=== | | ===Communications for operators and partners=== |
| | | |
− | * □ Contact list with addresses and phone numbers | + | * Contact list with addresses and phone numbers |
− | * □ Reporting requirements for partners | + | * Reporting requirements for partners |
| | | |
| ===Data collection=== | | ===Data collection=== |
| | | |
− | * □ Mud logging | + | * Mud logging |
− | | + | ** Crew size and services to be provided |
− | <list-item>Crew size and services to be provided</list-item><list-item>Number of sets of each type of sample -wet
| + | ** Number of sets of each type of sample |
− | | + | ***wet |
− | <list-item>- dry</list-item><list-item>- geochemical</list-item><list-item>- paleontological</list-item></list-item><list-item>Pressurized unit</list-item><list-item>Hot wire or flame ionization detection (FID) chromatograph</list-item><list-item>Bit dulling plot</list-item><list-item>Overpressure plot</list-item><list-item>[[Rate of penetration]] (ROP), weight on bit (WOB), pump pressure (PP), revolutions per minute (RPM), and bit data</list-item><list-item>Mud data</list-item><list-item>Pit volume monitors</list-item><list-item>Special analyses
| + | ***dry |
− | | + | ***geochemical |
− | <list-item>- ion tracing</list-item><list-item>- radioactive monitoring</list-item><list-item>- shale densities</list-item><list-item>- d and dc exponent</list-item><list-item>- hydrogen sulfide (H<sub>2</sub>S) detectors</list-item></list-item><list-item>CRT displays on rig floor, company representative's office</list-item>
| + | ***paleontological |
− | * □ Electric logging | + | **Pressurized unit |
− | | + | ** Hot wire or flame ionization detection (FID) chromatograph |
− | <list-item>Big, regular, or slim hole tools</list-item><list-item>Temperature requirements</list-item><list-item>Fresh, salt, or oil mud tools</list-item><list-item>Tool combinations and order of logging runs (usually gamma ray, deep resistivity, [[porosity]], sonic, pad-type resistivity, dipmeter, checkshot survey, and sidewall cores)</list-item><list-item>Backup tools</list-item><list-item>Calibration, both at surface (before and after logging) and downhole</list-item><list-item>Repeat and overlap sections</list-item><list-item>Scales</list-item><list-item>Check shot survey points (determined after first logging run)</list-item><list-item>Bottom hole temperature (BHT) with each tool</list-item><list-item>Maximum logging speeds</list-item><list-item>Magnetic tape requirements (e.g., 800 or 1600 bpi)</list-item><list-item>Display format</list-item>
| + | ** Bit dulling plot |
− | * □ Fluid samples | + | ** Overpressure plot |
− | | + | ** [[Rate of penetration]] (ROP), weight on bit (WOB), pump pressure (PP), revolutions per minute (RPM), and bit data |
− | <list-item>Repeat formation test (RFT) and drill stem test (DST)
| + | ** Mud data |
− | | + | ** Pit volume monitors |
− | <list-item>- Interval(s)</list-item><list-item>- Packer seats</list-item><list-item>- Sampling method</list-item></list-item>
| + | ** Special analyses |
− | * □ Coring | + | *** ion tracing |
− | | + | *** radioactive monitoring |
− | <list-item>Conventional, wireline, and/or sidewall
| + | *** shale densities |
− | | + | *** d and dc exponent |
− | <list-item>- Formations automatically cored?</list-item><list-item>- Core on show?</list-item><list-item>- [[Core handling]] procedures</list-item></list-item>
| + | *** hydrogen sulfide (H<sub>2</sub>S) detectors |
| + | ** CRT displays on rig floor, company representative's office |
| + | * Electric logging |
| + | ** Big, regular, or slim hole tools |
| + | ** Temperature requirements |
| + | ** Fresh, salt, or oil mud tools |
| + | ** Tool combinations and order of logging runs (usually [[Basic open hole tools#Gamma ray|gamma ray]], deep resistivity, [[porosity]], sonic, pad-type resistivity, [[dipmeter]], checkshot survey, and sidewall cores) |
| + | ** Backup tools |
| + | ** Calibration, both at surface (before and after logging) and downhole |
| + | ** Repeat and overlap sections |
| + | ** Scales |
| + | ** Check shot survey points (determined after first logging run) |
| + | ** Bottom hole temperature (BHT) with each tool |
| + | ** Maximum logging speeds |
| + | ** Magnetic tape requirements (e.g., 800 or 1600 bpi) |
| + | ** Display format |
| + | * Fluid samples |
| + | ** [[Wireline formation testers|Repeat formation test (RFT)]] and drill stem test (DST) |
| + | *** Interval(s) |
| + | *** Packer seats |
| + | *** Sampling method |
| + | * Coring |
| + | ** Conventional, wireline, and/or sidewall |
| + | *** Formations automatically cored? |
| + | ***Core on show? |
| + | ***[[Core handling]] procedures |
| | | |
| ===Data distribution=== | | ===Data distribution=== |
| | | |
− | * □ Types of data | + | * Types of data |
− | | + | ** Drilling records (e.g., bit record, geolograph charts) |
− | <list-item>Drilling records (e.g., bit record, geolograph charts)</list-item><list-item>Mudlogs and mudlog records</list-item><list-item>Electric logs</list-item><list-item>Core and/or cuttings (wet and/or dry)</list-item><list-item>Fluid samples</list-item><list-item>Pressure charts</list-item><list-item>Laboratory analyses
| + | ** Mudlogs and mudlog records |
− | | + | ** Electric logs |
− | <list-item>- cuttings</list-item><list-item>- cores</list-item><list-item>- biostratigraphic</list-item><list-item>- geochemical</list-item><list-item>- fluid properties</list-item></list-item>
| + | ** Core and/or cuttings (wet and/or dry) |
− | * □ Number of copies of each type of data for | + | ** Fluid samples |
− | | + | ** Pressure charts |
− | <list-item>Division office</list-item><list-item>Headquarters office</list-item><list-item>Partners</list-item><list-item>Federal and state agencies</list-item><list-item>Wellsite copies</list-item><list-item>Geologist and geophysicist</list-item><list-item>Drilling engineer</list-item><list-item>Reservoir engineer</list-item>
| + | ** Laboratory analyses |
| + | ***cuttings |
| + | *** cores |
| + | *** biostratigraphic |
| + | *** geochemical |
| + | *** fluid properties |
| + | * Number of copies of each type of data for |
| + | ** Division office |
| + | ** Headquarters office |
| + | ** Partners |
| + | ** Federal and state agencies |
| + | ** Wellsite copies |
| + | ** Geologist and geophysicist |
| + | ** Drilling engineer |
| + | ** Reservoir engineer |
| | | |
| ===Sources of data for well planning=== | | ===Sources of data for well planning=== |
| | | |
− | * □ Offset wells | + | * Offset wells |
− | | + | ** wireline logs |
− | <list-item>wireline logs</list-item><list-item>mudlogs</list-item><list-item>daily drilling reports</list-item><list-item>velocity surveys</list-item><list-item>bit records</list-item><list-item>scout tickets</list-item><list-item>[[paleontology]] and geochemistry reports</list-item><list-item>production data</list-item>
| + | ** mudlogs |
− | * □ State agencies (e.g., Railroad Commission in Texas) | + | ** daily drilling reports |
− | * □ Industry libraries (e.g., Petroleum Information [PI], Dwights) | + | ** velocity surveys |
− | * □ Service companies | + | ** bit records |
− | * □ Literature search | + | ** [[scout ticket]]s |
| + | ** [[paleontology]] and geochemistry reports |
| + | ** production data |
| + | * State agencies (e.g., Railroad Commission in Texas) |
| + | * Industry libraries (e.g., Petroleum Information [PI], Dwights) |
| + | * Service companies |
| + | * Literature search |
| | | |
| ==See also== | | ==See also== |
− | * [[Drilling problems]]
| |
− | * [[Mudlogging: Drill cuttings analysis]]
| |
| * [[Introduction to wellsite methods]] | | * [[Introduction to wellsite methods]] |
| * [[Wellbore trajectory]] | | * [[Wellbore trajectory]] |
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| * [[Rig personnel]] | | * [[Rig personnel]] |
| * [[Wellsite math]] | | * [[Wellsite math]] |
− | * [[Core handling]]
| + | * [[Mudlogging: equipment, services, and personnel]] |
− | * [[Mudlogging: Equipment, services, and personnel]] | |
− | * [[Core alteration and preservation]]
| |
| * [[Wellsite safety]] | | * [[Wellsite safety]] |
− | * [[Sidewall coring]]
| |
− | * [[Show evaluation]]
| |
− | * [[Rate of penetration]]
| |
− | * [[Mudlogging: The mudlog]]
| |
− | * [[Pressure detection]]
| |
− | * [[Drill stem testing]]
| |
− | * [[Measurement while drilling]]
| |
| * [[Offshore rigs]] | | * [[Offshore rigs]] |
− | * [[Fishing]] | + | * [[Well types]] |
− | * [[Core orientation]]
| |
− | * [[Mudlogging: Gas extraction and monitoring]]
| |
| | | |
| ==External links== | | ==External links== |
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| | | |
| [[Category:Wellsite methods]] | | [[Category:Wellsite methods]] |
| + | [[Category:Methods in Exploration 10]] |