Water included in the groundwater which is derrived from the rock itself, as opposed to water which has percolated down from the surface.

Refers to liquids that have been trapped in the pores of sedimentary rocks as they were deposited. These liquid solutions are composed of water and contain many mineral components. As rocks are buried [..]

water trapped in the pore spaces of a sedimentary rock at the time it was deposited. It is usually highly mineralized.

Water inherent to the producing formation; or fossil sea water trapped in the pore spaces of sediments during their deposition.

fossil water' which has always occupied pore spaces in permeable rock since it was first deposited. Unlike edge and bottomwater, which can help production, connate water present in an oil reservo [..]

The water present in a petroleum reservoir in the same zone occupied by oil and gas considered by some to be the residue of the primal sea, connate water occurs as a film of water around each grain of sand in granular reservoir rock and is held in place by capillary attraction.

Water trapped in the pores of a rock during formation of the rock. The chemistry of connate water can change in composition throughout the history of the rock. Connate water can be dense and saline co [..]

water that is trapped in the interstices, or breaks, between adjacent strata of sedimentary rock. It becomes trapped at the time of deposition.