Changes

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|-

| Poor production test flow rates

| Poor production test flow rates

| Low viscosity (due to oil source or [[biodegradation]]) or high wax paraffinic

| Low [[viscosity]] (due to oil source or [[biodegradation]]) or high wax paraffinic

| Bulk properties, GC, and HPLC

| Bulk properties, GC, and HPLC

|-

|-

|-

|-

| Reservoir continuity

| Reservoir continuity

| Lateral or vertical continuity

| [[Lateral]] or vertical continuity

| GC

| GC

|-

|-

[[file:oil-and-condensate-analysis_fig1.png|thumb|{{figure number|1}}Flow diagram showing the basic steps followed in oil-oil correlations using gas chromatography.]]

[[file:oil-and-condensate-analysis_fig1.png|thumb|{{figure number|1}}Flow diagram showing the basic steps followed in oil-oil correlations using gas chromatography.]]

The key to useful data depends on proper sampling. Provisions for proper sampling of oils and condensates should be included in all well proposals, tests, completions, and workover programs. The following list gives when to sample wells for oils:

The key to useful data depends on proper sampling. Provisions for proper sampling of oils and condensates should be included in all well proposals, tests, completions, and [[workover]] programs. The following list gives when to sample wells for oils:

* When FTs or DSTs recover oil and/or water

* When FTs or DSTs recover oil and/or water

| Before [[accumulation]]

| Before [[accumulation]]

|

|

*  Source input and diagenesis

*  Source input and [[diagenesis]]

*  Maturation processes

*  [[Maturation]] processes

** Time

** Time

** Temperature

** Temperature

[[Category:Laboratory methods]]

[[Category:Laboratory methods]]