Kern Front lies about five miles north of Oildale and ten miles north of Bakersfield, immediately southeast of the much larger Kern River field it is often mistaken for. Standard Oil of California drilled the discovery in 1912 to 2,836 feet in the Etchegoin pool. Cumulative production has been reported at roughly 210 million barrels, ranking Kern Front among the state’s thirty largest fields. The oil is heavy at about 14 degrees API, and like its famous neighbor, the field runs on steam rather than on natural reservoir energy.
Standard Oil Company of California, later Chevron, completed Kern Front Well No. 1 in 1912, drilling to 2,836 feet and finding oil in the Etchegoin sands. The Bakersfield district was already the center of California production, and Kern Front developed alongside Kern River rather than as a separate boom. Annual output peaked in 1929 at about 4.5 million barrels, then fell away through the middle of the century as the heavy crude proved unwilling to flow once the modest natural drive had been spent.
Thermal recovery rescued the field, as it did across the Bakersfield heavy-oil belt. Cyclic steam injection began at Kern Front in 1964, and pattern steam flooding followed in 1978, converting a fading stripper district into a durable producer. Gas output from the field peaked around 1980. By early 2009 Kern Front still had 838 producing oil wells, a well count that reflects the shallow depths and close spacing typical of steam operations, where many small wells serve better than a few large ones.
Operatorship has been unusually varied. Chevron worked the field early, Century Oil Management held positions later, and Mobil, ARCO, and Occidental were all active in the 1990s before the field passed largely to independents including Bellaire, Vintage, E and B Natural Resources, and West American Energy. That churn means Kern Front mineral owners have often seen the payor name on their checks change several times without any change in the wells themselves — a common source of confusion when heirs try to trace an interest.
Kern Front produces from two principal units on the eastern flank of the San Joaquin Basin: the Pliocene Etchegoin Formation, a marine sand, and the overlying Chanac Formation, a non-marine sand, both averaging around 2,300 feet in depth. Trapping combines gentle eastward-thinning structure with stratigraphic pinch-out against the basin margin, the same setup that holds oil at Kern River just to the northwest. Crude averages about 14 degrees API with roughly 0.9 percent sulfur — heavy, viscous oil that needs heat before it will move.
Kern Front is a steam field. Cyclic steaming, in which a well is injected, allowed to soak, and then produced, began in 1964, and continuous pattern steam flooding was added in 1978. Heat cuts the viscosity of 14-gravity crude by orders of magnitude, which is the only practical way to make these sands deliver. Because steam is generated by burning natural gas, project economics move with the oil-to-gas price relationship, and injection operates under CalGEM permits. Royalty volumes here track steam schedules closely.
A Kern Front royalty behaves like its neighbor Kern River in miniature: slow decline, long duration, and complete dependence on the operator continuing to inject steam. The complication is operator churn — the field has passed through many hands, and payor quality varies lease by lease. Valuation should start from your specific leases and their recent activity rather than from the field’s 210-million-barrel history. If a certain sum today is worth more to you than an operator-dependent stream, we buy minerals and royalties in Kern County and provide free written offers.
County-level well data, production charts, and selling guides for the counties this field spans:
No. They adjoin, and both produce heavy oil under steam from similar shallow sands, but they are separately designated fields with different operators. Kern River is far larger. Your division order will name the field, lease, and operator for your interest.
Payor changes are routine here. The field has moved among Chevron, Century, Mobil, ARCO, Occidental, and a number of independents over the decades. What matters is that the new payor issues a division order for your interest and that the wells continue producing.
More than most owners expect. Steam is made by burning natural gas, so when gas is expensive relative to oil, injection becomes less attractive and volumes soften. Thermal royalty income is a function of that price relationship as well as of the oil price itself.