Changes

===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, CO₂)

* Anticipated pay type(s) (e.g., oil, gas, CO₂)

* □ 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 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)

* □ H₂S and other gases

* H₂S and other gases

* □ Over- and underpressured zones

* Over- and underpressured zones

* □ Casing points

* Casing points

* □ [[Drilling problems]]

* [[Drilling problems]]

<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>

<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>

===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

<list-item>Crew size and services to be provided</list-item><list-item>Number of sets of each type of sample -wet

<list-item>Crew size and services to be provided</list-item><list-item>Number of sets of each type of sample -wet

<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 (H₂S) detectors</list-item></list-item><list-item>CRT displays on rig floor, company representative's office</list-item>

<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 (H₂S) detectors</list-item></list-item><list-item>CRT displays on rig floor, company representative's office</list-item>

* □ Electric logging

* Electric logging

<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>

<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>

* □ Fluid samples

* Fluid samples

<list-item>Repeat formation test (RFT) and drill stem test (DST)

<list-item>Repeat formation test (RFT) and drill stem test (DST)

<list-item>- Interval(s)</list-item><list-item>- Packer seats</list-item><list-item>- Sampling method</list-item></list-item>

<list-item>- Interval(s)</list-item><list-item>- Packer seats</list-item><list-item>- Sampling method</list-item></list-item>

* □ Coring

* Coring

<list-item>Conventional, wireline, and/or sidewall

<list-item>Conventional, wireline, and/or sidewall

===Data distribution===

===Data distribution===

* □ Types of data

* Types of data

<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

<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

<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>

<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>

* □ Number of copies of each type of data for

* Number of copies of each type of data for

<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>

<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>

===Sources of data for well planning===

===Sources of data for well planning===

* □ Offset wells

* Offset wells

<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>

<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>

* □ State agencies (e.g., Railroad Commission in Texas)

* State agencies (e.g., Railroad Commission in Texas)

* □ Industry libraries (e.g., Petroleum Information [PI], Dwights)

* Industry libraries (e.g., Petroleum Information [PI], Dwights)

* □ Service companies

* Service companies

* □ Literature search

* Literature search

==See also==

==See also==