Combination high and low pressure absorption process

Claim 1

THE PROCESS OF TREATING A RAW WET NATURAL GAS CONTAINING PROPANE AND HEAVIER CONSTITUENTS TO TRANSFER GASEOUS CONSTITUENTS CONSISTING OF PROPANE AND HEAVIER FROM A LOW PRESSURE RESIDUE GAS STREAM TO A HIGH PRESSURE RESIDUE GAS STREAM, WITHOUT COMPRESSING AS A GAS SAID GASEOUS CONSTITUENTS, WHICH COMPRISES ABSORBING A PORTION OF SAID GASEOUS CONSTITUENTS FROM A FIRST STREAM OF SAID NATURAL GAS AT A FIRST SUPERATMOSPHERIC PRESSURE WITH A FIRST STREAM OF A LIQUID LEAN ABSORPTION OIL IN A FIRST ABSORPTION STEP TO PRODUCE A FIRST RESIDUE GAS, ABSORBING AN ADDITIONAL PORTION OF SAID GASEOUS CONSTITUENTS FROM SAID FIRST RESIDUE GAS AT SUBSTANTIALLY NO GREATER PRESSURE THAN SAID FIRST PRESSURE WITH A SECOND STREAM OF THE SAME LIQUID LEAN ABSORPTION OIL IN A SECOND ABSORPTION STEP TO PRODUCE A SECOND RESIDUE GAS AND A PARTLY PRESATURATED LIQUID ABSORPTION OIL, PUMPING SAID PRESATURATED LIQUID FROM SAID FIRST PRESSURE TO A SECOND SUPERATMOSPHERIC PRESSURE WHICH IS AT LEAST TWICE SAID FIRST PRESSURE, AND ABSORBING A PORTION OF SAID GASEOUS CONSTITUENTS FROM A SECOND STREAM OF THAT PORTION OF THE SAME SAID NATURAL GAS THAT REMAINS GASEOUS AT SAID SECOND PRESSURE WITH SAID PRESATURATED LIQUID IN A THIRD ABSORPTION STEP TO PRODUCE A THIRD RESIDUE GAS, WHEREBY SAID THIRD RESIDUE GAS CONTAINS MORE PROPANE AND HEAVIER CONSTITUENTS THAN IF SAID LEAN OIL WERE EMPLOYED IN PLACE OF SAID PRESATURATED LIQUID.